Fqp⁡(a1+r,…,ap+rb1+r,…,bq+r;z)=∑n=0m-1(a1+r)n⁢⋯⁢(ap+r)n(b1+r)n⁢⋯⁢(bq+r)n⁢znn!+O⁡(1r(q-p)⁢m),