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

0,2

Links

Table of n, a(n) for n=0..23.

Formula

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

Crossrefs

Sequence in context: A357034 A041928 A028054 * A028038 A348266 A025992

Adjacent sequences: A100786 A100787 A100788 * A100790 A100791 A100792

Keyword

nonn

Author

N. J. A. Sloane, Jan 04 2005

Status

approved