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Search: id:A156082
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| A156082 |
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Minimal coefficient of the polynomial (-1)^n*prod_{k=1..n} (1-x^k)^2 |
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+0
1
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| 1, 2, 3, 4, 6, 8, 12, 19, 24, 36, 52, 74, 103, 156, 223, 322, 470, 682, 992, 1448, 2120, 3072, 4494, 6538, 9584, 14001, 20400, 29928, 43774, 64032, 93968, 137520, 201766, 296236, 433746, 637812, 936334, 1373622, 2021344, 2968872, 4364300, 6422472
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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S. R. Finch, Signum equations and extremal coefficients.
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MATHEMATICA
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Table[ -Min[CoefficientList[Expand[(-1)^n*Product[(1 - x^k)^2, {k, 1, n}]], x]], {n, 1, 50}]
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CROSSREFS
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A133871
Sequence in context: A048597 A074964 A017822 this_sequence A018465 A127107 A007886
Adjacent sequences: A156079 A156080 A156081 this_sequence A156083 A156084 A156085
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KEYWORD
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nonn
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AUTHOR
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S. R. Finch (Steven.Finch(AT)inria.fr), Feb 03 2009
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