A025130 - OEIS

A025130

Expansion of 1/((1-x)(1-9x)(1-11x)(1-12x)).

1, 33, 718, 12978, 211099, 3208611, 46530856, 652053876, 8903593717, 119147391909, 1569038275714, 20395728301494, 262306431768655, 3343671393938727, 42305729458640092, 531898781072416632

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OFFSET

0,2

LINKS

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

Index entries for linear recurrences with constant coefficients, signature (33, -371, 1527, -1188).

FORMULA

a(n)=(80*12^(n+3)-132*11^(n+3)+55*9^(n+3)-3)/2640. [Yahia Kahloune, May 29 2013].

MATHEMATICA

CoefficientList[Series[1/((1 - x) (1 - 9 x) (1 - 11 x) (1 - 12 x)), {x, 0, 20}], x] (* Wesley Ivan Hurt, Nov 17 2022 *)

CROSSREFS

Sequence in context: A028098 A028022 A028020 * A081141 A021021 A164750

Adjacent sequences: A025127 A025128 A025129 * A025131 A025132 A025133

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved