A028017 Expansion of 1/((1-2x)(1-8x)(1-9x)(1-12x)).

1, 31, 627, 10499, 158219, 2232387, 30141979, 394679923, 5055314187, 63715123043, 793475307131, 9793201406547, 120053522334955, 1464191224876099, 17788099372232283, 215464347026366771

Offset

0,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (31, -334, 1416, -1728).

Formula

a(n)=(7*12^(n+3)-40*9^(n+3)+35*8^(n+3)-2^(n+4))/840. [Yahia Kahloune, May 29 2013].

Crossrefs

Sequence in context: A028128 A028018 A028087 * A028013 A028073 A089758

Adjacent sequences: A028014 A028015 A028016 * A028018 A028019 A028020

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved