A025973 Expansion of 1/((1-2x)(1-4x)(1-7x)(1-10x)).

1, 23, 349, 4443, 51597, 568155, 6054973, 63196331, 650620333, 6637326267, 67293219357, 679380276939, 6838972903309, 68706054180059, 689275354683901, 6908259384473067, 69191143298038125, 692671313513140731

Offset

0,2

Links

Table of n, a(n) for n=0..17.

Index entries for linear recurrences with constant coefficients, signature (23, -180, 556, -560).

Formula

a(n) = (5*10^(n+3)-16*7^(n+3)+20*4^(n+3)-9*2^(n+3))/720. - Yahia Kahloune, May 23 2013

Crossrefs

Sequence in context: A125480 A023950 A268465 * A277833 A022469 A028030

Adjacent sequences: A025970 A025971 A025972 * A025974 A025975 A025976

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved