A082036 a(n) = (9*n^2+3*n+1) * n!.

1, 13, 86, 546, 3768, 28920, 246960, 2333520, 24232320, 274700160, 3378412800, 44826566400, 638509132800, 9720379468800, 157531172198400, 2708193616128000, 49231324606464000, 943638746738688000

Offset: 0

Author

Paul Barry, Apr 02 2003

Keywords

• easy
• nonn

Comments

A row of the number array A082038.

Crossrefs

Cf. A082035.

Formula

a(n) = 9*A002775(n) + 3*A001563(n) + n!.

Extensions

Definition and formula corrected by Neven Juric, Jul 01 2008