a(n) = (n!)^n * [x^n] -log(Sum_{k>=0} (-x)^k / (k!)^n).

A336439

a(n) = (n!)^n * [x^n] -log(Sum_{k>=0} (-x)^k / (k!)^n).

Terms

    a(0) =0a(1) =1a(2) =1a(3) =46a(4) =63111a(5) =4226436876

External references