OFFSET
-1,3
LINKS
G. C. Greubel, Table of n, a(n) for n = -1..1000
D. Ford, J. McKay and S. P. Norton, More on replicable functions, Commun. Algebra 22, No. 13, 5175-5193 (1994).
FORMULA
Expansion of -1 + (eta(q^5)*eta(q^7))/(eta(q)*eta(q^35)) in powers of q. - G. C. Greubel, Jan 28 2018
a(n) ~ exp(4*Pi*sqrt(n/35)) / (sqrt(2) * 35^(1/4) * n^(3/4)). - Vaclav Kotesovec, Jun 26 2018
EXAMPLE
T35B = 1/q + 2*q + 3*q^2 + 5*q^3 + 6*q^4 + 10*q^5 + 12*q^6 + 18*q^7 + ...
MATHEMATICA
eta[q_] := q^(1/24)*QPochhammer[q]; a[n_]:= SeriesCoefficient[-1 + (eta[q^5]*eta[q^7])/(eta[q]*eta[q^35]), {q, 0, n}]; Table[a[n], {n, -1, 50}] (* G. C. Greubel, Jan 28 2018)
PROG
(PARI) q='q+O('q^50); A = -1 + (eta(q^5)*eta(q^7))/(eta(q)*eta(q^35))/q; Vec(A) \\ G. C. Greubel, Jun 14 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 27 2000
EXTENSIONS
More terms from Michel Marcus, Feb 18 2014
STATUS
approved