OFFSET
0,3
FORMULA
a(n) = n! * [x^n] 1/(1 - n * x)^x.
PROG
(PARI) a(n) = (-1)^n*n!*sum(k=0, n\2, n^(n-k)*stirling(n-k, k, 1)/(n-k)!);
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, May 05 2023
STATUS
approved