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A021684 Expansion of 1/((1-x)(1-3x)(1-9x)(1-10x)). 3
1, 23, 360, 4810, 59111, 690573, 7801990, 86089520, 933531621, 9989073523, 105774639620, 1110701801430, 11583617458531, 120125571974873, 1239860303429250, 12746044308940540, 130587414625807841 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

LINKS

Index to sequences with linear recurrences with constant coefficients, signature (23,-169,417,-270)

FORMULA

a(n) = -1/144 +10^(n+3)/63+3^(n+2)/28 -3*9^(n+2)/16. - R. J. Mathar, Mar 15 2011

CROSSREFS

Sequence in context: A020346 A025964 A180361 * A077515 A025942 A020000

Adjacent sequences:  A021681 A021682 A021683 * A021685 A021686 A021687

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 13 14:37 EST 2012. Contains 205512 sequences.