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#50 by Joerg Arndt at Sun Aug 04 05:39:17 EDT 2024
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#49 by Joerg Arndt at Sun Aug 04 05:39:13 EDT 2024
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Alternate a(n) = Fibonacci numbers - (2*n) - 2.
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approved
editing
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#48 by Alois P. Heinz at Sun Jun 02 14:29:33 EDT 2024
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#47 by Stefano Spezia at Sun Jun 02 14:23:38 EDT 2024
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#46 by Stefano Spezia at Sun Jun 02 13:55:59 EDT 2024
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E.g.f.: 2*exp(3*x/2)*sinh(sqrt(5)*x/2)/sqr(5) - 2*exp(x). - Stefano Spezia, Jun 02 2024
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approved
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#45 by Charles R Greathouse IV at Thu Sep 08 08:46:10 EDT 2022
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(MAGMAMagma) [Fibonacci(2*n)-2: n in [0..40]];
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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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#44 by Bruno Berselli at Thu Nov 03 09:48:34 EDT 2016
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#43 by Colin Barker at Thu Nov 03 09:45:58 EDT 2016
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#42 by Colin Barker at Thu Nov 03 09:45:35 EDT 2016
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Colin Barker, <a href="/A249450/b249450.txt">Table of n, a(n) for n = 0..1000</a>
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a(n) = (-2-((3-sqrt(5))/2)^n/sqrt(5)+((3+sqrt(5))/2)^n/sqrt(5)). - Colin Barker, Nov 03 2016
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(PARI) Vec((-2+7*x-3*x^2)/(1-4*x+4*x^2-x^3) + O(x^30)) \\ Colin Barker, Nov 03 2016
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approved
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#41 by Charles R Greathouse IV at Sat Jun 13 00:55:17 EDT 2015
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<a href="/index/Rec#order_03">Index to sequencesentries withfor linear recurrences with constant coefficients</a>, signature (4,-4,1).
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Discussion
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| Sat Jun 13
| 00:55
| OEIS Server: https://oeis.org/edit/global/2439
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