The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A247617 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A247617

a(4n) = n + 1/2 - (-1)^n/2 + (-1)^n, a(2n+1) = 2*n + 5, a(4n+2) = 2*n + 3.
(history; published version)

#29 by Charles R Greathouse IV at Thu Sep 08 08:46:09 EDT 2022

PROG

(MAGMAMagma) I:=[1, 5, 3, 7, 1, 9, 5, 11, 3, 13, 7, 15]; [n le 12 select I[n] else Self(n-4)+Self(n-8)-Self(n-12): n in [1..80]]; // Vincenzo Librandi, Oct 15 2014

Discussion

Thu Sep 08

08:46

OEIS Server: https://oeis.org/edit/global/2944

#28 by Susanna Cuyler at Wed May 02 09:27:29 EDT 2018

STATUS

proposed

approved

#27 by G. C. Greubel at Tue May 01 23:05:21 EDT 2018

STATUS

editing

proposed

#26 by G. C. Greubel at Tue May 01 23:05:14 EDT 2018

LINKS

G. C. Greubel, <a href="/A247617/b247617.txt">Table of n, a(n) for n = 0..5000</a>

STATUS

approved

editing

#25 by Charles R Greathouse IV at Sat Jun 13 00:55:15 EDT 2015

LINKS

<a href="/index/Rec#order_12">Index to sequences with entries for linear recurrences with constant coefficients</a>, signature (0,0,0,1,0,0,0,1,0,0,0,-1).

Discussion

Sat Jun 13

00:55

OEIS Server: https://oeis.org/edit/global/2439

#24 by Bruno Berselli at Wed Oct 15 06:16:17 EDT 2014

STATUS

proposed

approved

#23 by Vincenzo Librandi at Wed Oct 15 05:38:34 EDT 2014

STATUS

editing

proposed

Discussion

Wed Oct 15

05:51

Bruno Berselli: We must remember this, in fact...

#22 by Vincenzo Librandi at Wed Oct 15 05:38:10 EDT 2014

PROG

(MAGMA) I:=[1, 5, 3, 7, 1, 9, 5, 11, 3, 13, 7, 15]; [n le 12 select I[n] else Self(n-4)+Self(n-8)-Self(n-12): n in [1..80]]; // Vincenzo Librandi, Oct 15 2014

STATUS

reviewed

editing

#21 by Michel Marcus at Wed Oct 15 05:33:41 EDT 2014

STATUS

proposed

reviewed

#20 by Bruno Berselli at Wed Oct 15 05:19:35 EDT 2014

STATUS

editing

proposed

Discussion

Wed Oct 15

05:33

Michel Marcus: ok but since A247617 and A246416  go together ..