A028138 Expansion of 1/((1-4x)(1-6x)(1-8x)(1-12x)).

1, 30, 580, 9240, 132496, 1784160, 23095360, 291434880, 3616450816, 44380976640, 540619555840, 6552897361920, 79164966670336, 954260234526720, 11485602445803520, 138104474808975360, 1659480116122157056

Offset

0,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (30, -320, 1440, -2304).

Formula

a(n)=9*12^n-2*8^(n+1)+9*6^n-4^n. [Yahia Kahloune, Jun 02 2013]

Crossrefs

Sequence in context: A028140 A028169 A028094 * A028127 A028086 A028092

Adjacent sequences: A028135 A028136 A028137 * A028139 A028140 A028141

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved