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 A022626 Expansion of Product_{m>=1} (1+q^m)^(-31). 2
 1, -31, 465, -4526, 32426, -184357, 877052, -3633851, 13513458, -46099108, 146495398, -438514468, 1246964119, -3391183930, 8867709030, -22393552057, 54808232438, -130404256148, 302394884204, -684929956630, 1518203338688 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS G. C. Greubel, Table of n, a(n) for n = 0..1000 FORMULA a(n) ~ (-1)^n * 31^(1/4) * exp(Pi*sqrt(31*n/6)) / (2^(7/4) * 3^(1/4) * n^(3/4)). - Vaclav Kotesovec, Aug 27 2015 MATHEMATICA nmax = 50; CoefficientList[Series[Product[1/(1 + x^k)^31, {k, 1, nmax}], {x, 0, nmax}], x] (* Vaclav Kotesovec, Aug 27 2015 *) CROSSREFS Sequence in context: A142280 A160894 A010947 * A042866 A110824 A161636 Adjacent sequences: A022623 A022624 A022625 * A022627 A022628 A022629 KEYWORD sign AUTHOR N. J. A. Sloane STATUS approved

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Last modified June 24 10:07 EDT 2024. Contains 373674 sequences. (Running on oeis4.)