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A031123
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Expansion of Sum_{m>=1} z^(m^2)/(1-z^((m+1)^2)).
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1
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0, 1, 0, 0, 1, 1, 0, 0, 0, 2, 0, 0, 0, 2, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 3, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 3, 0, 0, 0, 1, 0, 0, 0, 3, 0, 0, 0, 1, 0, 0, 0, 2, 1, 0, 0, 2, 0, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 2, 0, 0, 1, 1, 0, 0, 0
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OFFSET
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0,10
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LINKS
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MATHEMATICA
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nmax = 100; CoefficientList[Series[Sum[x^(m^2)/(1 - x^((m+1)^2)), {m, 1, Floor[Sqrt[nmax]] + 1}], {x, 0, nmax}], x] (* Vaclav Kotesovec, Oct 04 2017 *)
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PROG
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(PARI) lista(nn) = concat(0, Vec(sum(m=1, nn, z^(m^2)/(1-z^((m+1)^2) + O(z^nn))))); \\ Michel Marcus, Oct 02 2017
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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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