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A025009
Expansion of 1/((1-x)(1-9x)(1-10x)(1-11x)).
0
1, 31, 632, 10682, 162183, 2297253, 31000054, 403684144, 5115788645, 63462153755, 773891110356, 9306180096486, 110619493115587, 1302189143870737, 15203564170082738, 176265669269562908
OFFSET
0,2
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
KEYWORD
nonn,easy
AUTHOR
STATUS
approved