A026326 Expansion of 1/((1-2x)(1-6x)(1-7x)(1-9x)).

1, 24, 373, 4776, 54853, 588408, 6028741, 59809992, 579668485, 5521782552, 51920105029, 483393574248, 4466595742597, 41031327740856, 375223258308037, 3419303762715144, 31074026594864389, 281793678455877720

Offset

0,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (24, -203, 696, -756).

Formula

a(n) = -2*2^n/35 +18*6^n -343*7^n/10 +243*9^n/14. R. J. Mathar, Jun 23 2013

Crossrefs

Sequence in context: A168304 A053062 A028060 * A028043 A028056 A025997

Adjacent sequences: A026323 A026324 A026325 * A026327 A026328 A026329

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved