(-1)k⁢ζ(k)⁡(1-2⁢n)=2⁢(-1)n(2⁢π)2⁢n⁢∑m=0k∑r=0m(km)⁢(mr)⁢ℜ⁡(ck-m)⁢Γ(r)⁡(2⁢n)⁢ζ(m-r)⁡(2⁢n),