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A288837
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Coefficients in expansion of 691*E_12/Delta where Delta is the generating function of Ramanujan's tau function (A000594).
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2
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691, 82104, 136046844, 14852188160, 597231279270, 13989886672896, 230243024654600, 2938148100366336, 30857982903707085, 277430202679296000, 2194920198781034220, 15594068776929177600, 101032430846167832154, 604150780302870773760
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OFFSET
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-1,1
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LINKS
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FORMULA
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G.f.: 691*j - 432000 where j is the elliptic modular invariant.
a(n) ~ 691 * exp(4*Pi*sqrt(n)) / (sqrt(2) * n^(3/4)). - Vaclav Kotesovec, Apr 09 2018
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MATHEMATICA
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terms = 14;
E12[x_] = 1 + (65520/691)*Sum[k^11*x^k/(1 - x^k), {k, 1, terms}];
691*E12[x]/QPochhammer[x]^24 + O[x]^terms // CoefficientList[#, x]& (* Jean-François Alcover, Feb 26 2018 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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