A028095 Expansion of 1/((1-3x)(1-7x)(1-9x)(1-12x)).

1, 31, 622, 10294, 153139, 2133397, 28467664, 368853628, 4681501957, 58545953323, 724357095826, 8891996242402, 108525576595255, 1318871068893409, 15976717061264308, 193081291067943016

Offset

0,2

Links

Table of n, a(n) for n=0..15.

Index entries for linear recurrences with constant coefficients, signature (31, -339, 1521, -2268).

Formula

a(n)=(8*12^(n+3)-30*9^(n+3)+27*7^(n+3)-5*3^(n+3))/1080. [Yahia Kahloune, Jun 10 2013]

Crossrefs

Sequence in context: A302857 A028096 A042864 * A028128 A028018 A028087

Adjacent sequences: A028092 A028093 A028094 * A028096 A028097 A028098

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved