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A249687
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Coefficients of the j-function, squared: a(n) = A000521(n)^2.
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0
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1, 553536, 38763309456, 461981718937600, 747014438142000900, 409894695538614337536, 111023999702812768360000, 18079702144559278473609216, 1994247119540837731954644225
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OFFSET
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-1,2
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LINKS
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Table of n, a(n) for n=-1..7.
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FORMULA
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a(n) ~ exp(8*Pi*sqrt(n)) / (2*n^(3/2)). - Vaclav Kotesovec, Apr 09 2018
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MATHEMATICA
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CoefficientList[Series[(2^16 + x*QPochhammer[-1, x]^24)^3 / (2 * QPochhammer[-1, x])^24, {x, 0, 15}], x]^2 (* Vaclav Kotesovec, Apr 09 2018 *)
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CROSSREFS
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Cf. A000521.
Sequence in context: A188486 A204571 A253614 * A267600 A345639 A346352
Adjacent sequences: A249684 A249685 A249686 * A249688 A249689 A249690
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane, Nov 07 2014
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STATUS
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approved
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