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A022683
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Expansion of Product_{m>=1} (1-m*q^m)^23.
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2
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1, -23, 207, -782, -276, 12259, -29578, -42711, 229057, 93863, -828023, -2014110, 4727719, 15059963, -22586736, -58481962, -8654877, 246061935, 463250567, -671892192, -1993509889, -2171787581, 5545061605, 20642183588
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OFFSET
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0,2
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LINKS
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MATHEMATICA
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With[{nmax = 50}, CoefficientList[Series[Product[(1 - k*q^k)^23, {k, 1, nmax}], {q, 0, nmax}], q]] (* G. C. Greubel, Jul 19 2018 *)
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PROG
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(PARI) m=50; q='q+O('q^m); Vec(prod(n=1, m, (1-n*q^n)^23)) \\ G. C. Greubel, Jul 19 2018
(Magma) Coefficients(&*[(1-m*x^m)^23:m in [1..40]])[1..40] where x is PolynomialRing(Integers()).1; // G. C. Greubel, Jul 19 2018
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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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