A100789 First differences of A000543.

1, 22, 310, 2583, 13809, 54186, 171002, 460055, 1096313, 2375494, 4768246, 8988607, 16078425, 27509418, 45304554, 72180431, 111712337, 168523670, 248501398, 359039239, 509310241, 710570442, 976495290, 1323550503

Offset: 0

Author

N. J. A. Sloane, Jan 04 2005

Keywords

• nonn

Formula

(1/12)(2n+1)(2n^6+6n^5+11n^4+12n^3+25n^2+20n+12). - Ralf Stephan, May 16 2007