a(n) = (n!)^n * [x^n] -log(1 + Sum_{k>=1} (-x)^k / k^n).

A336440

a(n) = (n!)^n * [x^n] -log(1 + Sum_{k>=1} (-x)^k / k^n).

Terms

    a(0) =0a(1) =1a(2) =1a(3) =53a(4) =65656a(5) =4306202624

External references