OFFSET
0,2
FORMULA
E.g.f.: B(x)^4, where B(x) is the e.g.f. of A349683.
a(n) = 4 * Sum_{k=0..n} (3*n+4)^(k-1) * Stirling2(n,k).
PROG
(PARI) a(n) = 4*sum(k=0, n, (3*n+4)^(k-1)*stirling(n, k, 2));
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Sep 01 2024
STATUS
approved