A025978 Expansion of 1/((1-2x)(1-4x)(1-8x)(1-11x)).

1, 25, 415, 5805, 74271, 902325, 10616455, 122340685, 1390355791, 15651303525, 175025553495, 1948179192765, 21613189505311, 239210965847125, 2643048211482535, 29167353171072045, 321591476229774831

Offset

0,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (25, -210, 680, -704).

Formula

a(n) = -2*2^n/27 +8*4^n/7 -64*8^n/9 +1331*11^n/189. R. J. Mathar, Jun 20 2013

Crossrefs

Sequence in context: A025995 A023955 A025980 * A028037 A102072 A022845

Adjacent sequences: A025975 A025976 A025977 * A025979 A025980 A025981

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved