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%I #8 Jul 27 2016 09:55:32
%S 1,-72,2484,-54528,852426,-10055232,92389176,-671302656,3858182955,
%T -17183392736,55424393460,-98492944896,-138398873682,1754429566464,
%U -6543407393352,11399973267456,9872745919317,-120249696817008,328342926322544,-252123333707520
%N Fourier coefficients of (normalized Delta)^3.
%C Normalized Delta generates Ramanujan tau function. The cube is a weight-36 cusp form.
%F G.f.: q^3 * Prod_{n >= 1} (1-q^n)^72.
%e (normalized Delta)^3 = (tau(1)q+tau(2)q^2+ ... )^3 = q^3-72q^4+2484q^5- ....
%t s = q^3 QPochhammer[q]^72 + O[q]^23; Drop[CoefficientList[s, q], 3] (* _Jean-François Alcover_, Jul 27 2016 *)
%K sign,easy
%O 3,2
%A Barry Brent (barryb(AT)primenet.com)
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