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G. C. Greubel, <a href="/A058613/b058613.txt">Table of n, a(n) for n = -1..2500</a>
Expansion of A + 3 + 1/A, where A := (eta(q)*eta(q^6)*eta(q^10)*eta(q^15] )/( eta(q^2)*eta(q^3)*eta(q^5)*eta(q^30)))^3, in powers of q. - G. C. Greubel, Jun 22 2018
eta[q_]:= q^(1/24)*QPochhammer[q]; A := (eta[q]*eta[q^6]*eta[q^10]* eta[q^15]/(eta[q^2]*eta[q^3]*eta[q^5]*eta[q^30]))^3; a:=CoefficientList[ Series[q*(A + 3 + 1/A), {q, 0, 60}], q]; Table[a[[n]], {n, 1, 50}] (* G. C. Greubel, Jun 22 2018 *)
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a(n) ~ exp(2*Pi*sqrt(2*n/15)) / (2^(3/4) * 15^(1/4) * n^(3/4)). - Vaclav Kotesovec, Sep 07 2017
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D. Ford, J. McKay and S. P. Norton, More on replicable functions, Commun. Algebra 22, No. 13, 5175-5193 (1994).
D. Ford, J. McKay and S. P. Norton, <a href="http://dx.doi.org/10.1080/00927879408825127">More on replicable functions</a>, Commun. Algebra 22, No. 13, 5175-5193 (1994).
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