OFFSET
0,2
FORMULA
a(n) = Sum_{k=0..n} (2*k)! * Stirling1(n,k).
PROG
(PARI) my(N=20, x='x+O('x^N)); Vec(serlaplace(sum(k=0, N, (2*k)!*log(1+x)^k/k!)))
(PARI) a(n) = sum(k=0, n, (2*k)!*stirling(n, k, 1));
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, May 20 2022
STATUS
approved