A028185 Expansion of 1/((1-5x)(1-7x)(1-9x)(1-11x)).

1, 32, 650, 10720, 156891, 2127552, 27391540, 339890240, 4105242581, 48592072672, 566386687230, 6523917123360, 74453894585071, 843546156267392, 9502346083391720, 106552392368702080, 1190431518905528361

Offset

0,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (32,-374,1888,-3465).

Formula

a(n)=(11^(n+3)-3*9^(n+3)+3*7^(n+3)-5^(n+3))/48. [Yahia Kahloune, Jun 05 2013]

Mathematica

CoefficientList[Series[1/((1-5x)(1-7x)(1-9x)(1-11x)), {x, 0, 60}], x]  (* Harvey P. Dale, Feb 26 2011 *)
LinearRecurrence[{32, -374, 1888, -3465}, {1, 32, 650, 10720}, 20] (* Harvey P. Dale, Apr 06 2023 *)

Crossrefs

Sequence in context: A028204 A028190 A028202 * A028156 A028177 A028183

Adjacent sequences: A028182 A028183 A028184 * A028186 A028187 A028188

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved