A028069 Expansion of 1/((1-3x)(1-5x)(1-9x)(1-11x)).

1, 28, 510, 7700, 104951, 1344168, 16531180, 197743000, 2319239901, 26813094308, 306681461450, 3479254697100, 39224238812851, 440041610610448, 4917647821351320, 54788913249014000, 608931512071655801

Offset

0,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (28, -274, 1092, -1485).

Formula

a(n)=(11^(n+3)-2*9^(n+3)+2*5^(n+3)-3^(n+3))/96. [Yahia Kahloune, Jun 10 2013]

Crossrefs

Sequence in context: A028081 A028009 A028119 * A028007 A028078 A028000

Adjacent sequences: A028066 A028067 A028068 * A028070 A028071 A028072

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved