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 A260983 Coefficients of the mock theta function gammabar(q). 0
 1, 2, -2, 2, 2, -6, 4, 4, -8, 4, 4, -10, 6, 8, -16, 8, 10, -22, 12, 12, -26, 16, 16, -38, 20, 22, -48, 26, 28, -58, 32, 36, -78, 40, 44, -96, 52, 56, -116, 64, 68, -150, 80, 84, -182, 96, 104, -218, 118, 126, -270, 144, 152, -326, 172, 184, -388, 208, 220, -470, 248 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS K. Bringmann, J. Dousse, J. Lovejoy, and K. Mahlburg, Overpartitions with restricted odd differences, Electron. J. Combin. 22 (2015), no.3, paper 3.17. K. Bringmann and J. Lovejoy, Dyson's rank, overpartitions, and weak Maass forms, Int. Math. Res. Not. (2007), rnm063. FORMULA G.f.: 1 + 2*Sum_{n >= 1} q^(n(n+1)/2)*(1-q^2)(1-q^4)...(1-q^(2n-2))*(1-q^n)/((1-q^3)(1-q^6)...(1-q^(3*n)). CROSSREFS Sequence in context: A263455 A283677 A355192 * A103222 A319100 A304794 Adjacent sequences: A260980 A260981 A260982 * A260984 A260985 A260986 KEYWORD sign AUTHOR Jeremy Lovejoy, Aug 06 2015 STATUS approved

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Last modified December 9 00:20 EST 2022. Contains 358698 sequences. (Running on oeis4.)