A028048 Expansion of 1/((1-3x)(1-4x)(1-9x)(1-11x)).

1, 27, 478, 7062, 94699, 1198209, 14603176, 173499804, 2024524117, 23314991271, 265875954994, 3009351209826, 33865370166655, 379381897212813, 4234967357150332, 47140543570858728, 523549120110020713

Offset

0,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (27,-251,933,-1188).

Formula

a(n)=(15*11^(n+3)-28*9^(n+3)+48*4^(n+3)-35*3^(n+3))/1680. [Yahia Kahloune, Jun 07 2013]

Mathematica

CoefficientList[Series[1/((1-3x)(1-4x)(1-9x)(1-11x)), {x, 0, 20}], x] (* or *) LinearRecurrence[{27, -251, 933, -1188}, {1, 27, 478, 7062}, 20] (* Harvey P. Dale, Mar 24 2018 *)

Crossrefs

Sequence in context: A026795 A028114 A026727 * A028063 A024441 A026028

Adjacent sequences: A028045 A028046 A028047 * A028049 A028050 A028051

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved