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#41 by Michael De Vlieger at Sat Aug 13 06:23:21 EDT 2022
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#40 by Michel Marcus at Sat Aug 13 06:04:11 EDT 2022
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#39 by Amiram Eldar at Sat Aug 13 04:07:20 EDT 2022
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#38 by Amiram Eldar at Sat Aug 13 03:35:37 EDT 2022
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| FORMULA
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Sum_{n>=3} 1/a(n) = 15/8 + Pi^2/36 - Pi/(4*sqrt(3)) + tan(Pi/(2*sqrt(3)))*Pi/(2*sqrt(3)). - Amiram Eldar, Aug 13 2022
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| PROG
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(MAGMAMagma)[Floor(n^2/6): n in [0..60]]; // Vincenzo Librandi, May 08 2011
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| STATUS
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approved
editing
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#37 by Alois P. Heinz at Mon Mar 07 13:35:16 EST 2022
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#36 by Michel Marcus at Mon Mar 07 13:31:50 EST 2022
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#35 by Michel Marcus at Mon Mar 07 13:31:47 EST 2022
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#34 by Sean A. Irvine at Sun Jul 18 00:42:19 EDT 2021
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#33 by Sean A. Irvine at Sun Jun 27 17:27:02 EDT 2021
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#32 by Sean A. Irvine at Sun Jun 27 17:26:56 EDT 2021
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| CROSSREFS
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Cf. A000290, A007590, A000212, A002620, A118015, A118013, A056834, A130519, A056838, A056865.
Cf. A056834, A130519, A056838, A056865.
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| STATUS
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proposed
editing
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