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A024442 Expansion of 1/((1-x)(1-7x)(1-9x)(1-11x)). 0
1, 28, 518, 7988, 111279, 1454376, 18208156, 221140696, 2626932077, 30692791844, 354119115714, 4046102802924, 45880411771195, 517157095113232, 5801772397167992, 64842434348911472, 722511991410929433 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..16.

Index entries for linear recurrences with constant coefficients, signature (28, -266, 932, -693).

FORMULA

a(n)=(6*11^(n+3) - 15*9^(n+3) + 10*7^(n+3) - 1)/480. [Yahia Kahloune, Jun 27 2013]

MATHEMATICA

CoefficientList[Series[1/((1-x)(1-7x)(1-9x)(1-11x)), {x, 0, 30}], x] (* or *) LinearRecurrence[{28, -266, 932, -693}, {1, 28, 518, 7988}, 30] (* Harvey P. Dale, Jan 18 2015 *)

CROSSREFS

Sequence in context: A026149 A028049 A283244 * A026108 A024434 A024440

Adjacent sequences:  A024439 A024440 A024441 * A024443 A024444 A024445

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified October 18 23:44 EDT 2021. Contains 348071 sequences. (Running on oeis4.)