Fq+sp+r⁡(a1,…,ap,c1,…,crb1,…,bq,d1,…,ds;z⁢ζ)=∑k=0∞(a)k⁢(α)k⁢(β)k⁢(-z)k(b)k⁢(γ+k)k⁢k!⁢Fq+1p+2⁡(α+k,β+k,a1+k,…,ap+kγ+2⁢k+1,b1+k,…,bq+k;z)⁢Fs+2r+2⁡(-k,γ+k,c1,…,crα,β,d1,…,ds;ζ).