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A026108
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Expansion of 1/((1-2x)(1-5x)(1-9x)(1-12x)).
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0
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1, 28, 519, 8078, 114617, 1539720, 19981483, 253451506, 3165132333, 39098271212, 479245678847, 5841627343734, 70916047801249, 858343285202704, 10366285999237011, 124990982044693562, 1505251989334074965
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OFFSET
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0,2
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LINKS
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FORMULA
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a(0)=1, a(1)=28, a(2)=519, a(3)=8078, a(n)=28*a(n-1)-265*a(n-2)+ 966*a(n-3)- 1080*a(n-4). - Harvey P. Dale, Feb 20 2013
a(n) = -4*2^n/105 +125*5^n/84 -243*9^n/28 +288*12^n/35. R. J. Mathar, Jun 23 2013
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MATHEMATICA
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CoefficientList[Series[1/((1-2x)(1-5x)(1-9x)(1-12x)), {x, 0, 30}], x] (* or *) LinearRecurrence[{28, -265, 966, -1080}, {1, 28, 519, 8078}, 40] (* Harvey P. Dale, Feb 20 2013 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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