A028092 Expansion of 1/((1-3x)(1-7x)(1-8x)(1-12x)).

1, 30, 583, 9360, 135373, 1838130, 23972131, 304421700, 3797192905, 46789978950, 571763347519, 6946889160120, 84072723694597, 1014722669092890, 12224658793966747, 147088107868298220

Offset

0,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (30, -317, 1380, -2016).

Formula

a(n)=(12^(n+3)-9*8^(n+3)+9*7^(n+3)-3^(n+3))/180. [Yahia Kahloune, May 31 2013]

Crossrefs

Sequence in context: A028138 A028127 A028086 * A028126 A028016 A028085

Adjacent sequences: A028089 A028090 A028091 * A028093 A028094 A028095

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved