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A306703
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Expansion of Sum_{k>=0} x^k / Product_{j=1..k} (1 + x^j)^j.
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1
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1, 1, 0, 1, -2, 1, -2, 1, -4, 7, -5, 7, -7, 16, -13, 16, -33, 38, -39, 31, -75, 79, -92, 118, -139, 201, -230, 269, -264, 494, -476, 523, -780, 886, -1095, 1261, -1533, 1857, -2593, 2197, -3367, 4256, -4240, 5816, -6484, 7985, -9800, 11051, -12561, 17530, -17516
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OFFSET
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0,5
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LINKS
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MATHEMATICA
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nmax = 50; CoefficientList[Series[Sum[x^k/Product[(1 + x^j)^j, {j, 1, k}], {k, 0, nmax}], {x, 0, nmax}], x]
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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STATUS
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approved
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