OFFSET
0,3
FORMULA
a(0) = 0; a(n) = n^3 * a(n-1) + n^2.
a(n) = n^2 * A368775(n-1) for n > 0.
PROG
(PARI) a(n) = n!^3*sum(k=0, n, k^2/k!^3);
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Jan 05 2024
STATUS
approved