The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A261540 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A261540

a(n) = n^7 + 7*n^5 + 14*n^3 + 7*n.
(history; published version)

#37 by Charles R Greathouse IV at Thu Sep 08 08:46:13 EDT 2022

PROG

(MAGMAMagma) [n^7 + 7*n^5 + 14*n^3 + 7*n: n in [0..30]]; // Vincenzo Librandi, Aug 24 2015

Discussion

Thu Sep 08

08:46

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

#36 by Bruno Berselli at Tue Aug 25 10:07:33 EDT 2015

STATUS

editing

approved

#35 by Bruno Berselli at Tue Aug 25 10:07:30 EDT 2015

FORMULA

a(n) = -a(-n) = ( (n+sqrt(n^2+4))/2 )^7 - 1/( (n+sqrt(n^2+4))/2 )^7.

STATUS

approved

editing

#34 by Bruno Berselli at Tue Aug 25 09:27:52 EDT 2015

STATUS

editing

approved

#33 by Bruno Berselli at Tue Aug 25 09:27:48 EDT 2015

EXTENSIONS

Offset changed from 1 to 0 and initial 0 added by _Bruno Berselli, _, Aug 25 2015

STATUS

approved

editing

#32 by Bruno Berselli at Tue Aug 25 09:27:24 EDT 2015

STATUS

editing

approved

#31 by Bruno Berselli at Tue Aug 25 09:27:20 EDT 2015

EXTENSIONS

Offset changed from 1 to 0 and initial 0 added by Bruno Berselli, Aug 25 2015

STATUS

approved

editing

#30 by OEIS Server at Tue Aug 25 09:14:06 EDT 2015

LINKS

Raphael Ranna, <a href="/A261540/b261540_2.txt">Table of n, a(n) for n = 0..100</a>

#29 by Bruno Berselli at Tue Aug 25 09:14:06 EDT 2015

STATUS

editing

approved

Discussion

Tue Aug 25

09:14

OEIS Server: Installed new b-file as b261540.txt.  Old b-file is now b261540_2.txt.

#28 by Bruno Berselli at Tue Aug 25 09:14:03 EDT 2015

LINKS

Bruno Berselli, Raphael Ranna, <a href="/A261540/b261540_2.txt">Table of n, a(n) for n = 0..100</a>