(1-z3)a(-z)3⁢a⁢(1Γ⁡(a+23)⁢Γ⁡(23)⁢F⁡(a,a+1323;z-3)+ⅇ13⁢π⁢ⅈz⁢Γ⁡(a)⁢Γ⁡(43)⁢F⁡(a+13,a+2343;z-3))=332⁢a+12⁢ⅇ12⁢a⁢π⁢ⅈ⁢Γ⁡(a+13)⁢(1-ζ)a2⁢π⁢Γ⁡(2⁢a+23)⁢(-ζ)2⁢a⁢F⁡(a+13,3⁢a2⁢a+23;ζ-1),