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 | | http://functions.wolfram.com/07.21.17.0016.01 | 
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 | | Hypergeometric1F1Regularized[a, b, z] == 
  ((n - a + b)/(-n + a)) Subscript[\[ScriptCapitalC], n - 1][a, b, z] 
    Hypergeometric1F1Regularized[a - n - 1, b, z] + 
   Subscript[\[ScriptCapitalC], n][a, b, z] Hypergeometric1F1Regularized[
     a - n, b, z] /; Subscript[\[ScriptCapitalC], 0][a, b, z] == 1 && 
  Subscript[\[ScriptCapitalC], 1][a, b, z] == (2 a - b + z - 2)/(a - 1) && 
  Subscript[\[ScriptCapitalC], n][a, b, z] == 
   ((2 n - 2 a + b - z)/(n - a)) Subscript[\[ScriptCapitalC], n - 1][a, b, 
      z] - ((n - 1 - a + b)/(n - 1 - a)) Subscript[\[ScriptCapitalC], n - 2][
      a, b, z] && Element[n, Integers] && n > 0 | 
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 | | Cell[BoxData[RowBox[List[RowBox[List[RowBox[List["Hypergeometric1F1Regularized", "[", RowBox[List["a", ",", "b", ",", "z"]], "]"]], "\[Equal]", RowBox[List[RowBox[List[FractionBox[RowBox[List["n", "-", "a", "+", "b"]], RowBox[List[RowBox[List["-", "n"]], "+", "a"]]], " ", RowBox[List[SubscriptBox["\[ScriptCapitalC]", RowBox[List["n", "-", "1"]]], "[", RowBox[List["a", ",", "b", ",", "z"]], "]"]], RowBox[List["Hypergeometric1F1Regularized", "[", RowBox[List[RowBox[List["a", "-", "n", "-", "1"]], ",", "b", ",", "z"]], "]"]]]], "+", RowBox[List[RowBox[List[SubscriptBox["\[ScriptCapitalC]", "n"], "[", RowBox[List["a", ",", "b", ",", "z"]], "]"]], RowBox[List["Hypergeometric1F1Regularized", "[", RowBox[List[RowBox[List["a", "-", "n"]], ",", "b", ",", "z"]], "]"]]]]]]]], "/;", RowBox[List[RowBox[List[RowBox[List[SubscriptBox["\[ScriptCapitalC]", "0"], "[", RowBox[List["a", ",", "b", ",", "z"]], "]"]], "\[Equal]", "1"]], "\[And]", RowBox[List[RowBox[List[SubscriptBox["\[ScriptCapitalC]", "1"], "[", RowBox[List["a", ",", "b", ",", "z"]], "]"]], "\[Equal]", FractionBox[RowBox[List[RowBox[List["2", " ", "a"]], "-", "b", "+", "z", "-", "2"]], RowBox[List["a", "-", "1"]]]]], " ", "\[And]", RowBox[List[RowBox[List[SubscriptBox["\[ScriptCapitalC]", "n"], "[", RowBox[List["a", ",", "b", ",", "z"]], "]"]], "\[Equal]", RowBox[List[RowBox[List[FractionBox[RowBox[List[RowBox[List["2", "n"]], "-", RowBox[List["2", "a"]], "+", "b", "-", "z"]], RowBox[List["n", "-", "a"]]], RowBox[List[SubscriptBox["\[ScriptCapitalC]", RowBox[List["n", "-", "1"]]], "[", RowBox[List["a", ",", "b", ",", "z"]], "]"]]]], " ", "-", RowBox[List[FractionBox[RowBox[List["n", "-", "1", "-", "a", "+", "b", " "]], RowBox[List["n", "-", "1", "-", "a"]]], " ", RowBox[List[SubscriptBox["\[ScriptCapitalC]", RowBox[List["n", "-", "2"]]], "[", RowBox[List["a", ",", "b", ",", "z"]], "]"]]]]]]]], "\[And]", RowBox[List["Element", "[", RowBox[List["n", ",", "Integers"]], "]"]], "\[And]", RowBox[List["n", ">", "0"]]]]]]]] | 
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   <math xmlns='http://www.w3.org/1998/Math/MathML' mathematica:form='TraditionalForm' xmlns:mathematica='http://www.wolfram.com/XML/'>  <semantics>  <mrow>  <mrow>  <semantics>  <mrow>  <mrow>  <msub>  <mo>   </mo>  <mn> 1 </mn>  </msub>  <msub>  <mover>  <mi> F </mi>  <mo> ~ </mo>  </mover>  <mn> 1 </mn>  </msub>  </mrow>  <mo> ⁡ </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> ; </mo>  <mi> b </mi>  <mo> ; </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <annotation encoding='Mathematica'> TagBox[TagBox[RowBox[List[RowBox[List[SubscriptBox["\[InvisiblePrefixScriptBase]", FormBox["1", TraditionalForm]], SubscriptBox[OverscriptBox["F", "~"], FormBox["1", TraditionalForm]]]], "\[InvisibleApplication]", RowBox[List["(", RowBox[List[TagBox[TagBox[TagBox["a", Hypergeometric1F1Regularized, Rule[Editable, True]], InterpretTemplate[Function[List[SlotSequence[1]]]]], Hypergeometric1F1Regularized, Rule[Editable, False]], ";", TagBox[TagBox[TagBox["b", Hypergeometric1F1Regularized, Rule[Editable, True]], InterpretTemplate[Function[List[SlotSequence[1]]]]], Hypergeometric1F1Regularized, Rule[Editable, False]], ";", TagBox["z", Hypergeometric1F1Regularized, Rule[Editable, True]]]], ")"]]]], InterpretTemplate[Function[HypergeometricPFQRegularized[Slot[1], Slot[2], Slot[3]]]], Rule[Editable, False]], Hypergeometric1F1Regularized] </annotation>  </semantics>  <mo> ⩵ </mo>  <mrow>  <mrow>  <mfrac>  <mrow>  <mi> n </mi>  <mo> - </mo>  <mi> a </mi>  <mo> + </mo>  <mi> b </mi>  </mrow>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> n </mi>  </mrow>  </mfrac>  <mo> ⁢ </mo>  <mrow>  <msub>  <mi> 𝒞 </mi>  <mrow>  <mi> n </mi>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  </msub>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> , </mo>  <mi> b </mi>  <mo> , </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <semantics>  <mrow>  <mrow>  <msub>  <mo>   </mo>  <mn> 1 </mn>  </msub>  <msub>  <mover>  <mi> F </mi>  <mo> ~ </mo>  </mover>  <mn> 1 </mn>  </msub>  </mrow>  <mo> ⁡ </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> n </mi>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  <mo> ; </mo>  <mi> b </mi>  <mo> ; </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <annotation encoding='Mathematica'> TagBox[TagBox[RowBox[List[RowBox[List[SubscriptBox["\[InvisiblePrefixScriptBase]", FormBox["1", TraditionalForm]], SubscriptBox[OverscriptBox["F", "~"], FormBox["1", TraditionalForm]]]], "\[InvisibleApplication]", RowBox[List["(", RowBox[List[TagBox[TagBox[TagBox[RowBox[List["a", "-", "n", "-", "1"]], Hypergeometric1F1Regularized, Rule[Editable, True]], InterpretTemplate[Function[List[SlotSequence[1]]]]], Hypergeometric1F1Regularized, Rule[Editable, False]], ";", TagBox[TagBox[TagBox["b", Hypergeometric1F1Regularized, Rule[Editable, True]], InterpretTemplate[Function[List[SlotSequence[1]]]]], Hypergeometric1F1Regularized, Rule[Editable, False]], ";", TagBox["z", Hypergeometric1F1Regularized, Rule[Editable, True]]]], ")"]]]], InterpretTemplate[Function[HypergeometricPFQRegularized[Slot[1], Slot[2], Slot[3]]]], Rule[Editable, False]], Hypergeometric1F1Regularized] </annotation>  </semantics>  </mrow>  <mtext>   </mtext>  <mo> + </mo>  <mrow>  <mrow>  <msub>  <mi> 𝒞 </mi>  <mi> n </mi>  </msub>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> , </mo>  <mi> b </mi>  <mo> , </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <semantics>  <mrow>  <mrow>  <msub>  <mo>   </mo>  <mn> 1 </mn>  </msub>  <msub>  <mover>  <mi> F </mi>  <mo> ~ </mo>  </mover>  <mn> 1 </mn>  </msub>  </mrow>  <mo> ⁡ </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> n </mi>  </mrow>  <mo> ; </mo>  <mi> b </mi>  <mo> ; </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <annotation encoding='Mathematica'> TagBox[TagBox[RowBox[List[RowBox[List[SubscriptBox["\[InvisiblePrefixScriptBase]", FormBox["1", TraditionalForm]], SubscriptBox[OverscriptBox["F", "~"], FormBox["1", TraditionalForm]]]], "\[InvisibleApplication]", RowBox[List["(", RowBox[List[TagBox[TagBox[TagBox[RowBox[List["a", "-", "n"]], Hypergeometric1F1Regularized, Rule[Editable, True]], InterpretTemplate[Function[List[SlotSequence[1]]]]], Hypergeometric1F1Regularized, Rule[Editable, False]], ";", TagBox[TagBox[TagBox["b", Hypergeometric1F1Regularized, Rule[Editable, True]], InterpretTemplate[Function[List[SlotSequence[1]]]]], Hypergeometric1F1Regularized, Rule[Editable, False]], ";", TagBox["z", Hypergeometric1F1Regularized, Rule[Editable, True]]]], ")"]]]], InterpretTemplate[Function[HypergeometricPFQRegularized[Slot[1], Slot[2], Slot[3]]]], Rule[Editable, False]], Hypergeometric1F1Regularized] </annotation>  </semantics>  </mrow>  </mrow>  </mrow>  <mtext>   </mtext>  <mo> /; </mo>  <mrow>  <mrow>  <mrow>  <msub>  <mi> 𝒞 </mi>  <mn> 0 </mn>  </msub>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> , </mo>  <mi> b </mi>  <mo> , </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⩵ </mo>  <mn> 1 </mn>  </mrow>  <mo> ∧ </mo>  <mrow>  <mrow>  <msub>  <mi> 𝒞 </mi>  <mn> 1 </mn>  </msub>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> , </mo>  <mi> b </mi>  <mo> , </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⩵ </mo>  <mfrac>  <mrow>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> - </mo>  <mi> b </mi>  <mo> + </mo>  <mi> z </mi>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  </mfrac>  </mrow>  <mo> ∧ </mo>  <mrow>  <mrow>  <msub>  <mi> 𝒞 </mi>  <mi> n </mi>  </msub>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> , </mo>  <mi> b </mi>  <mo> , </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⩵ </mo>  <mrow>  <mrow>  <mfrac>  <mrow>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> n </mi>  </mrow>  <mo> - </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mi> b </mi>  <mo> - </mo>  <mi> z </mi>  </mrow>  <mrow>  <mi> n </mi>  <mo> - </mo>  <mi> a </mi>  </mrow>  </mfrac>  <mo> ⁢ </mo>  <mrow>  <msub>  <mi> 𝒞 </mi>  <mrow>  <mi> n </mi>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  </msub>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> , </mo>  <mi> b </mi>  <mo> , </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <mo> - </mo>  <mrow>  <mfrac>  <mrow>  <mi> n </mi>  <mo> - </mo>  <mi> a </mi>  <mo> + </mo>  <mi> b </mi>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  <mrow>  <mi> n </mi>  <mo> - </mo>  <mi> a </mi>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  </mfrac>  <mo> ⁢ </mo>  <mrow>  <msub>  <mi> 𝒞 </mi>  <mrow>  <mi> n </mi>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  </msub>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> , </mo>  <mi> b </mi>  <mo> , </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </mrow>  </mrow>  <mo> ∧ </mo>  <mrow>  <mi> n </mi>  <mo> ∈ </mo>  <msup>  <mi> ℕ </mi>  <mo> + </mo>  </msup>  </mrow>  </mrow>  </mrow>  <annotation-xml encoding='MathML-Content'>  <apply>  <ci> Condition </ci>  <apply>  <eq />  <apply>  <ci> Hypergeometric1F1Regularized </ci>  <ci> a </ci>  <ci> b </ci>  <ci> z </ci>  </apply>  <apply>  <plus />  <apply>  <times />  <apply>  <times />  <apply>  <plus />  <ci> n </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> a </ci>  </apply>  <ci> b </ci>  </apply>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> n </ci>  </apply>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <apply>  <apply>  <ci> Subscript </ci>  <ci> 𝒞 </ci>  <apply>  <plus />  <ci> n </ci>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <ci> a </ci>  <ci> b </ci>  <ci> z </ci>  </apply>  <apply>  <ci> Hypergeometric1F1Regularized </ci>  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> n </ci>  </apply>  <cn type='integer'> -1 </cn>  </apply>  <ci> b </ci>  <ci> z </ci>  </apply>  </apply>  <apply>  <times />  <apply>  <apply>  <ci> Subscript </ci>  <ci> 𝒞 </ci>  <ci> n </ci>  </apply>  <ci> a </ci>  <ci> b </ci>  <ci> z </ci>  </apply>  <apply>  <ci> Hypergeometric1F1Regularized </ci>  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> n </ci>  </apply>  </apply>  <ci> b </ci>  <ci> z </ci>  </apply>  </apply>  </apply>  </apply>  <apply>  <and />  <apply>  <eq />  <apply>  <apply>  <ci> Subscript </ci>  <ci> 𝒞 </ci>  <cn type='integer'> 0 </cn>  </apply>  <ci> a </ci>  <ci> b </ci>  <ci> z </ci>  </apply>  <cn type='integer'> 1 </cn>  </apply>  <apply>  <eq />  <apply>  <apply>  <ci> Subscript </ci>  <ci> 𝒞 </ci>  <cn type='integer'> 1 </cn>  </apply>  <ci> a </ci>  <ci> b </ci>  <ci> z </ci>  </apply>  <apply>  <times />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> 2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  <ci> z </ci>  <cn type='integer'> -2 </cn>  </apply>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <cn type='integer'> -1 </cn>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  <apply>  <eq />  <apply>  <apply>  <ci> Subscript </ci>  <ci> 𝒞 </ci>  <ci> n </ci>  </apply>  <ci> a </ci>  <ci> b </ci>  <ci> z </ci>  </apply>  <apply>  <plus />  <apply>  <times />  <apply>  <times />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> 2 </cn>  <ci> n </ci>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <cn type='integer'> 2 </cn>  <ci> a </ci>  </apply>  </apply>  <ci> b </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> z </ci>  </apply>  </apply>  <apply>  <power />  <apply>  <plus />  <ci> n </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> a </ci>  </apply>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <apply>  <apply>  <ci> Subscript </ci>  <ci> 𝒞 </ci>  <apply>  <plus />  <ci> n </ci>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <ci> a </ci>  <ci> b </ci>  <ci> z </ci>  </apply>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <apply>  <times />  <apply>  <plus />  <ci> n </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> a </ci>  </apply>  <ci> b </ci>  <cn type='integer'> -1 </cn>  </apply>  <apply>  <power />  <apply>  <plus />  <ci> n </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> a </ci>  </apply>  <cn type='integer'> -1 </cn>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <apply>  <apply>  <ci> Subscript </ci>  <ci> 𝒞 </ci>  <apply>  <plus />  <ci> n </ci>  <cn type='integer'> -2 </cn>  </apply>  </apply>  <ci> a </ci>  <ci> b </ci>  <ci> z </ci>  </apply>  </apply>  </apply>  </apply>  </apply>  <apply>  <in />  <ci> n </ci>  <apply>  <ci> SuperPlus </ci>  <ci> ℕ </ci>  </apply>  </apply>  </apply>  </apply>  </annotation-xml>  </semantics>  </math> 
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 | | Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["Hypergeometric1F1Regularized", "[", RowBox[List["a_", ",", "b_", ",", "z_"]], "]"]], "]"]], "\[RuleDelayed]", RowBox[List[RowBox[List[FractionBox[RowBox[List[RowBox[List["(", RowBox[List["n", "-", "a", "+", "b"]], ")"]], " ", RowBox[List[SubscriptBox["\[ScriptCapitalC]", RowBox[List["n", "-", "1"]]], "[", RowBox[List["a", ",", "b", ",", "z"]], "]"]], " ", RowBox[List["Hypergeometric1F1Regularized", "[", RowBox[List[RowBox[List["a", "-", "n", "-", "1"]], ",", "b", ",", "z"]], "]"]]]], RowBox[List[RowBox[List["-", "n"]], "+", "a"]]], "+", RowBox[List[RowBox[List[SubscriptBox["\[ScriptCapitalC]", "n"], "[", RowBox[List["a", ",", "b", ",", "z"]], "]"]], " ", RowBox[List["Hypergeometric1F1Regularized", "[", RowBox[List[RowBox[List["a", "-", "n"]], ",", "b", ",", "z"]], "]"]]]]]], "/;", RowBox[List[RowBox[List[RowBox[List[SubscriptBox["\[ScriptCapitalC]", "0"], "[", RowBox[List["a", ",", "b", ",", "z"]], "]"]], "\[Equal]", "1"]], "&&", RowBox[List[RowBox[List[SubscriptBox["\[ScriptCapitalC]", "1"], "[", RowBox[List["a", ",", "b", ",", "z"]], "]"]], "\[Equal]", FractionBox[RowBox[List[RowBox[List["2", " ", "a"]], "-", "b", "+", "z", "-", "2"]], RowBox[List["a", "-", "1"]]]]], "&&", RowBox[List[RowBox[List[SubscriptBox["\[ScriptCapitalC]", "n"], "[", RowBox[List["a", ",", "b", ",", "z"]], "]"]], "\[Equal]", RowBox[List[FractionBox[RowBox[List[RowBox[List["(", RowBox[List[RowBox[List["2", " ", "n"]], "-", RowBox[List["2", " ", "a"]], "+", "b", "-", "z"]], ")"]], " ", RowBox[List[SubscriptBox["\[ScriptCapitalC]", RowBox[List["n", "-", "1"]]], "[", RowBox[List["a", ",", "b", ",", "z"]], "]"]]]], RowBox[List["n", "-", "a"]]], "-", FractionBox[RowBox[List[RowBox[List["(", RowBox[List["n", "-", "1", "-", "a", "+", "b"]], ")"]], " ", RowBox[List[SubscriptBox["\[ScriptCapitalC]", RowBox[List["n", "-", "2"]]], "[", RowBox[List["a", ",", "b", ",", "z"]], "]"]]]], RowBox[List["n", "-", "1", "-", "a"]]]]]]], "&&", RowBox[List["n", "\[Element]", "Integers"]], "&&", RowBox[List["n", ">", "0"]]]]]]]]]] | 
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 | | Date Added to functions.wolfram.com (modification date) | 
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 | | HypergeometricPFQRegularized[{},{b},z] |  | HypergeometricPFQRegularized[{a1,a2},{b1},z] |  | HypergeometricPFQRegularized[{a1,...,ap},{b1,...,bq},z] |  |  | 
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