For fixed z and with symbolical integers in parameters
For fixed z and a1=-m, b1=1/2-n, b2=-p
For fixed z and a1=m, b1=1/2+n, b2=1/2+p
For fixed z and a1=m, b1=1/2-n, b2=1/2+p
For fixed z and a1=m, b1=1/2-n, b2=1/2-p