a(n) = n! * [x^n] exp(x/(1 - x)^n).

A293013

a(n) = n! * [x^n] exp(x/(1 - x)^n).

Terms

    a(0) =1a(1) =1a(2) =5a(3) =55a(4) =961a(5) =24101a(6) =818821a(7) =36053515a(8) =1984670465a(9) =132825475081

External references