A028225 Expansion of 1/((1-7x)(1-9x)(1-10x)(1-11x)).

1, 37, 860, 16070, 263991, 3983007, 56583850, 768771040, 10093501781, 129000877577, 1613435099640, 19826334683610, 240097655804371, 2872253241385747, 34007147715912230, 399112139110865780

Offset

0,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (37, -509, 3083, -6930).

Formula

a(n)=(3*11^(n+3)-8*10^(n+3)+6*9^(n+3)-7^(n+3))/24. [Yahia Kahloune, Jun 05 2013]

Crossrefs

Sequence in context: A333065 A251105 A144511 * A028223 A028217 A028215

Adjacent sequences: A028222 A028223 A028224 * A028226 A028227 A028228

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved