A028080 Expansion of 1/((1-3x)(1-6x)(1-8x)(1-10x)).

1, 27, 469, 6687, 85357, 1016775, 11565973, 127403199, 1371332413, 14511863223, 151627818277, 1569077088111, 16117515157069, 164615225572071, 1673829571276981, 16960654592840223, 171391059145733725

Offset

0,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (27, -260, 1044, -1440).

Formula

a(n)=(15*10^(n+3)-42*8^(n+3)+35*6^(n+3)-8*3^(n+3))/840. [Yahia Kahloune, May 31 2013]

Mathematica

CoefficientList[Series[1/((1-3x)(1-6x)(1-8x)(1-10x)), {x, 0, 20}], x]  (* Harvey P. Dale, Mar 22 2011 *)

Crossrefs

Sequence in context: A028132 A028089 A028121 * A028118 A028068 A028077

Adjacent sequences: A028077 A028078 A028079 * A028081 A028082 A028083

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved