A368561 a(n) = Sum_{k=0..n} k! * n^k.

1, 2, 11, 184, 6565, 390806, 34557919, 4237440628, 687219772553, 142347286888210, 36654963132246211, 11483715014356017104, 4300711472638444724653, 1897241450053063830832078, 973695564434830963964311655

Offset: 0

Author

Seiichi Manyama, Dec 30 2023

Keywords

• nonn
• easy

Crossrefs

Cf. A058006, A112368, A112370, A112541.

Programs

PARI

a(n) = sum(k=0, n, k!*n^k);

Formula

a(n) ~ n! * n^n. - Vaclav Kotesovec, Jan 13 2024