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A024441
Expansion of 1/((1-x)(1-7x)(1-9x)(1-10x)).
0
1, 27, 480, 7090, 94311, 1173417, 13944190, 160292880, 1797313221, 19769671207, 214195117500, 2292743705070, 24300717989731, 255479745527397, 2667841806196410, 27701356042027660, 286258773993179841
OFFSET
0,2
FORMULA
a(n) = (16*10^(n+3) - 27*9^(n+3) + 12*7^(n+3) - 1)/432. [Yahia Kahloune, Jun 28 2013]
MATHEMATICA
CoefficientList[Series[1/((1-x)(1-7x)(1-9x)(1-10x)), {x, 0, 30}], x] (* or *) LinearRecurrence[{27, -249, 853, -630}, {1, 27, 480, 7090}, 30] (* Harvey P. Dale, Apr 21 2024 *)
CROSSREFS
Sequence in context: A026727 A028048 A028063 * A026028 A026543 A028046
KEYWORD
nonn,easy
AUTHOR
STATUS
approved