The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A047211 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A047211

Numbers that are congruent to {2, 4} mod 5.
(history; published version)

#71 by Harvey P. Dale at Tue Mar 26 10:09:56 EDT 2024

STATUS

editing

approved

#70 by Harvey P. Dale at Tue Mar 26 10:09:53 EDT 2024

MATHEMATICA

LinearRecurrence[{1, 1, -1}, {2, 4, 7}, 80] (* Harvey P. Dale, Mar 26 2024 *)

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approved

editing

#69 by Michael De Vlieger at Wed Aug 24 09:00:50 EDT 2022

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reviewed

approved

#68 by Michel Marcus at Wed Aug 24 02:42:53 EDT 2022

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proposed

reviewed

#67 by David Lovler at Wed Aug 24 02:36:44 EDT 2022

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editing

proposed

#66 by David Lovler at Wed Aug 24 02:35:12 EDT 2022

FORMULA

E.g.f.: 1 + ((510*x - 3/2)*exp(x) - (1/2)*exp(-x))/24. - David Lovler, Aug 23 2022

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proposed

editing

#65 by David Lovler at Tue Aug 23 22:47:43 EDT 2022

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editing

proposed

#64 by David Lovler at Tue Aug 23 22:46:49 EDT 2022

LINKS

David Lovler, <a href="/A047211/b047211.txt">Table of n, a(n) for n = 1..1000</a>

FORMULA

E.g.f.: 1 + ((5*x - 3/2)*exp(x) - (1/2)*exp(-x))/2. - David Lovler, Aug 23 2022

PROG

(MAGMAMagma) [Floor((5*n-1)/2): n in [1..50]]; // Wesley Ivan Hurt, May 25 2014

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approved

editing

#63 by Joerg Arndt at Tue Dec 07 11:01:04 EST 2021

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reviewed

approved

#62 by Hugo Pfoertner at Tue Dec 07 02:21:31 EST 2021

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proposed

reviewed