A028034 Expansion of 1/((1-3x)(1-4x)(1-6x)(1-9x)).

1, 22, 313, 3682, 39109, 391174, 3769921, 35484394, 328932637, 3018821806, 27523981849, 249859595986, 2261664434485, 20432811986518, 184363359728497, 1662082800576058, 14975637634031053, 134882161611414910

Offset

0,2

Links

Table of n, a(n) for n=0..17.

Index entries for linear recurrences with constant coefficients, signature (22,-171,558,-648).

Formula

a(n) = (9^(n+3)-5*6^(n+3)+9*4^(n+3)-5*3^(n+3))/90. - Yahia Kahloune, May 30 2013

Mathematica

CoefficientList[Series[1/((1-3x)(1-4x)(1-6x)(1-9x)), {x, 0, 30}], x] (* Harvey P. Dale, Oct 09 2018 *)

Crossrefs

Sequence in context: A028038 A348266 A025992 * A028231 A326277 A025988

Adjacent sequences: A028031 A028032 A028033 * A028035 A028036 A028037

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved