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A028009 Expansion of 1/((1-2x)(1-7x)(1-9x)(1-10x)). 0
1, 28, 509, 7628, 102477, 1284060, 15338893, 177026476, 1991073293, 21954504572, 238334455437, 2555217498444, 27118409281549, 285415846100764, 2983193752870541, 30999901741572332, 320557221434296845, 3300921733229659836, 33869642781313790605 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..18.

FORMULA

a(n) = (35*10^(n+3)-60*9^(n+3)+4*7^(n+4)-3*2^(n+3))/840. - Yahia Kahloune, Jun 06 2013

CROSSREFS

Sequence in context: A028083 A028122 A028081 * A028119 A028069 A028007

Adjacent sequences:  A028006 A028007 A028008 * A028010 A028011 A028012

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified January 20 09:55 EST 2022. Contains 350471 sequences. (Running on oeis4.)