A028033 Expansion of 1/((1-3x)(1-4x)(1-6x)(1-8x)).

1, 21, 283, 3129, 31003, 287217, 2547091, 21931833, 185027755, 1538650113, 12663786499, 103454051337, 840560481307, 6802315926609, 54886579262707, 441905197121241, 3552134005816459, 28518494951667105

Offset

0,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (21, -158, 504, -576).

Formula

a(n)=(3*8^(n+3)-10*6^(n+3)+15*4^(n+3)-8*3^(n+3))/120. [Yahia Kahloune, May 27 2013].

Crossrefs

Sequence in context: A028053 A223996 A323063 * A176711 A025987 A125456

Adjacent sequences: A028030 A028031 A028032 * A028034 A028035 A028036

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved