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A026024
Expansion of 1/((1-2x)(1-5x)(1-9x)(1-10x)).
0
1, 26, 443, 6280, 80481, 969126, 11196103, 125634740, 1380061661, 14917299826, 159239422563, 1683073423200, 17647253908441, 183823250672126, 1904399083525823, 19639540889107660, 201755613688828821
OFFSET
0,2
FORMULA
a(0)=1, a(1)=26, a(2)=443, a(3)=6280, a(n)=26*a(n-1)-233*a(n-2)+ 820*a(n-3)- 900*a(n-4) [From Harvey P. Dale, Jul 12 2011]
a(n) = -2^n/21 +25*5^n/12 -729*9^n/28 +25*10^n/1. R. J. Mathar, Jun 20 2013
MATHEMATICA
CoefficientList[Series[1/((1-2x)(1-5x)(1-9x)(1-10x)), {x, 0, 30}], x] (* or *) LinearRecurrence[{26, -233, 820, -900}, {1, 26, 443, 6280}, 30] (* Harvey P. Dale, Jul 12 2011 *)
CROSSREFS
Sequence in context: A028062 A028047 A042304 * A026542 A028045 A288714
KEYWORD
nonn
AUTHOR
STATUS
approved