A025009 Expansion of 1/((1-x)(1-9x)(1-10x)(1-11x)).

1, 31, 632, 10682, 162183, 2297253, 31000054, 403684144, 5115788645, 63462153755, 773891110356, 9306180096486, 110619493115587, 1302189143870737, 15203564170082738, 176265669269562908

Offset

0,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (31, -329, 1289, -990).

Formula

a(n) = (36*11^(n+3) - 80*10^(n+3) + 45*9^(n+3) - 1)/720. [Yahia Kahloune, Jul 02 2013]

Crossrefs

Sequence in context: A078891 A078914 A068147 * A028004 A025007 A024446

Adjacent sequences: A025006 A025007 A025008 * A025010 A025011 A025012

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved