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#21 by Joerg Arndt at Tue Jan 23 02:20:39 EST 2024
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#20 by Michel Marcus at Tue Jan 23 01:42:11 EST 2024
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#19 by Amiram Eldar at Tue Jan 23 01:05:27 EST 2024
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#18 by Amiram Eldar at Tue Jan 23 00:16:07 EST 2024
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| LINKS
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Michael Somos, <a href="/A010815/a010815.txt">Introduction to Ramanujan theta functions</a>>, 2019.
Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/RamanujanThetaFunctions.html">Ramanujan Theta Functions</a>>.
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Sum_{k=1..n} abs(a(k)) ~ (Pi/sqrt(3)) * n. - Amiram Eldar, Jan 23 2024
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Cf. A033687, A033762, A093602, A093829, A112298, A122861, A244339.
Cf. A000122, A000700, A004016, A010054, A005882, A005928, A121373.
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approved
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#17 by Charles R Greathouse IV at Thu Sep 08 08:46:08 EDT 2022
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(MAGMAMagma) A := Basis( ModularForms( Gamma1(12), 1), 82); A[2] + 3*A[3] + A[4] - 3*A[5]; /* Michael Somos, Jan 17 2015 */
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Discussion
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| Thu Sep 08
| 08:46
| OEIS Server: https://oeis.org/edit/global/2944
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#16 by Charles R Greathouse IV at Fri Mar 12 22:24:47 EST 2021
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M. Michael Somos, <a href="/A010815/a010815.txt">Introduction to Ramanujan theta functions</a>
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Discussion
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| Fri Mar 12
| 22:24
| OEIS Server: https://oeis.org/edit/global/2897
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#15 by N. J. A. Sloane at Wed Nov 13 21:58:50 EST 2019
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M. Somos, <a href="http://somos.crg4.com="/A010815/multiqa010815.htmltxt">Introduction to Ramanujan theta functions</a>
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Discussion
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| Wed Nov 13
| 21:58
| OEIS Server: https://oeis.org/edit/global/2832
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#14 by Alois P. Heinz at Sat Sep 23 18:06:47 EDT 2017
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#13 by G. C. Greubel at Sat Sep 23 18:03:50 EDT 2017
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#12 by G. C. Greubel at Sat Sep 23 18:03:42 EDT 2017
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G. C. Greubel, <a href="/A244375/b244375.txt">Table of n, a(n) for n = 1..1000</a>
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