Kn⁡(z)=12⁢(12⁢z)-n⁢∑k=0n-1(n-k-1)!k!⁢(-14⁢z2)k+(-1)n+1⁢ln⁡(12⁢z)⁢In⁡(z)+(-1)n⁢12⁢(12⁢z)n⁢∑k=0∞(ψ⁡(k+1)+ψ⁡(n+k+1))⁢(14⁢z2)kk!⁢(n+k)!,