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A055586
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Sixth column of triangle A055584.
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2
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1, 10, 59, 268, 1037, 3598, 11535, 34832, 100369, 278546, 749587, 1966100, 5046293, 12714006, 31522839, 77070360, 186122265, 444596250, 1051721755, 2466250780, 5737807901, 13254000670, 30417092639, 69390565408
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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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G.f.: 1/(((1-x)^2)*(1-2*x)^4).
a(n) = A055584(n+5, 5). a(n) = sum(a(j), j=0..n-1) + A055582(n), n >= 1.
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PROG
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(PARI) Vec(1/(((1-x)^2)*(1-2*x)^4) + O(x^40)) \\ Michel Marcus, Dec 11 2015
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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