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#15 by Vaclav Kotesovec at Tue Oct 24 02:28:53 EDT 2017
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#14 by Vaclav Kotesovec at Tue Oct 24 02:28:48 EDT 2017
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#13 by Vaclav Kotesovec at Mon Oct 23 17:31:03 EDT 2017
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#12 by Vaclav Kotesovec at Mon Oct 23 17:30:48 EDT 2017
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| MATHEMATICA
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nmax = 50; CoefficientList[Series[2*Product[(1 + x^(2*k)) / (([1 + x^k) * (/((1 + x^(2*k-1)) * ())^2 * (1 + x^(4*k))), {k, 1, nmax}], {x, 0, nmax}], x] (* Vaclav Kotesovec, Oct 23 2017 *)
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approved
editing
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Discussion
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| Mon Oct 23
| 17:31
| Vaclav Kotesovec: Simplified
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#11 by Paul D. Hanna at Mon Oct 23 12:24:58 EDT 2017
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#10 by Paul D. Hanna at Mon Oct 23 12:24:56 EDT 2017
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#9 by Vaclav Kotesovec at Mon Oct 23 04:12:09 EDT 2017
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#8 by Vaclav Kotesovec at Mon Oct 23 04:12:03 EDT 2017
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| LINKS
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Vaclav Kotesovec, <a href="/A293132/b293132.txt">Table of n, a(n) for n = 1..2000</a>
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| STATUS
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approved
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#7 by Vaclav Kotesovec at Mon Oct 23 04:10:31 EDT 2017
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#6 by Vaclav Kotesovec at Mon Oct 23 04:01:38 EDT 2017
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| FORMULA
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a(n) ~ (-) ~ -(-1)^n * 7^(1/4) * exp(sqrt(7*n/3)*Pi/2) / (2^(3/2) * 3^(1/4) * n^(3/4)). - Vaclav Kotesovec, Oct 23 2017
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