A028038 Expansion of 1/((1-3x)(1-4x)(1-7x)(1-8x)).

1, 22, 311, 3608, 37485, 363594, 3368947, 30231916, 265060169, 2283904766, 19419219183, 163405866624, 1363677239653, 11304693716338, 93205539717419, 765024499566932, 6255874320057537, 50996811157171110

Offset

0,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (22, -173, 572, -672).

Formula

a(n)=(3*8^(n+3)-5*7^(n+3)+5*4^(n+3)-3^(n+4))/60. [Yahia Kahloune, May 30 2013]

Crossrefs

Sequence in context: A041928 A028054 A100789 * A348266 A025992 A028034

Adjacent sequences: A028035 A028036 A028037 * A028039 A028040 A028041

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved