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A016281
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Expansion of 1/((1-2x)(1-3x)(1-12x)).
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1
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1, 17, 223, 2741, 33103, 397901, 4776871, 57328757, 687964255, 8255629085, 99067724119, 1188813216773, 14265760187407, 171189127015469, 2054269538501767, 24651234505002389, 295814814189037759
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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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MATHEMATICA
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CoefficientList[Series[1 / ((1 - 2 x) (1 - 3 x) (1 - 12 x)), {x, 0, 20}], x] (* Vincenzo Librandi, Jun 25 2013 *)
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PROG
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(Magma) m:=20; R<x>:=PowerSeriesRing(Integers(), m); Coefficients(R!(1/((1-2*x)*(1-3*x)*(1-12*x)))); /* or */I:=[1, 17, 223]; [n le 3 select I[n] else 17*Self(n-1)-66*Self(n-2)+72*Self(n-3): n in [1..20]]; // Vincenzo Librandi, Jun 25 2013
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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