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A153252 Coefficients of the sixth-order mock theta function psi_{-}(q). 2

%I #18 Jan 08 2024 16:28:24

%S 0,1,2,4,7,12,19,29,44,65,94,134,188,261,358,486,654,872,1155,1519,

%T 1984,2576,3325,4270,5456,6939,8786,11077,13912,17406,21700,26961,

%U 33388,41221,50739,62278,76232,93067,113336,137684,166873

%N Coefficients of the sixth-order mock theta function psi_{-}(q).

%H Vaclav Kotesovec, <a href="/A153252/b153252.txt">Table of n, a(n) for n = 0..1000</a>

%H B. C. Berndt and S. H. Chan, <a href="http://dx.doi.org/10.1016/j.aim.2007.06.004">Sixth order mock theta functions</a>, Adv. Math. 216 (2007), 771-786.

%F G.f.: Sum_{n >= 1} q^n(1+q)(1+q^2)...(1+q^(2n-2))/((1-q)(1-q^3)...(1-q^(2n-1))).

%F a(n) ~ exp(Pi*sqrt(2*n/3)) / (2^(5/2)*sqrt(3*n)). - _Vaclav Kotesovec_, Jun 13 2019

%o (PARI) lista(nn) = q = qq + O(qq^nn); gf = sum(n = 1, nn, q^n * prod(k = 1, 2*n-2, 1 + q^k) / prod(k = 1, n, 1 - q^(2*k-1))); concat(0, Vec(gf)) \\_Michel Marcus_, Jun 18 2013

%Y Cf. A153251.

%Y Other '6th-order' mock theta functions are at A053268, A053269, A053270, A053271, A053272, A053273, A053274.

%K nonn

%O 0,3

%A _Jeremy Lovejoy_, Dec 21 2008

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Last modified June 23 17:30 EDT 2024. Contains 373653 sequences. (Running on oeis4.)