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 A004423 Expansion of (Sum_{n=-inf..inf} x^(n^2))^(-22). 1
 1, -44, 1012, -16192, 202356, -2102936, 18896064, -150747520, 1088265332, -7211641580, 44356933544, -255472920256, 1387689358528, -7151069205016, 35134409940608, -165273439140480, 747047401948276, -3254796172584792 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Seiichi Manyama, Table of n, a(n) for n = 0..10000 FORMULA a(n) ~ (-1)^n * exp(Pi*sqrt(m*n)) * m^((m+1)/4) / (2^(3*(m+1)/2) * n^((m+3)/4)), set m = 22 for this sequence. - Vaclav Kotesovec, Aug 18 2015 MATHEMATICA nmax = 30; CoefficientList[Series[Product[((1 + (-x)^k)/(1 - (-x)^k))^22, {k, 1, nmax}], {x, 0, nmax}], x] (* Vaclav Kotesovec, Aug 18 2015 *) CROSSREFS Sequence in context: A162182 A162413 A010996 * A238601 A172978 A114170 Adjacent sequences:  A004420 A004421 A004422 * A004424 A004425 A004426 KEYWORD sign AUTHOR STATUS approved

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Last modified August 19 11:16 EDT 2017. Contains 290797 sequences.