The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A154631 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A154631

Triangle read by rows: T(m,n) = 2mn + m + n + 5.
(history; published version)

#44 by Charles R Greathouse IV at Thu Sep 08 08:45:40 EDT 2022

PROG

(MAGMAMagma) /* Triangle: */ [[2*m*n+m+n+5: m in [1..n]]: n in [1..10]]; // Bruno Berselli, Aug 31 2012

Discussion

Thu Sep 08

08:45

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

#43 by Bruno Berselli at Wed Apr 01 09:02:51 EDT 2015

STATUS

proposed

approved

#42 by Avi Friedlich at Wed Apr 01 08:26:54 EDT 2015

STATUS

editing

proposed

#41 by Avi Friedlich at Wed Apr 01 08:26:09 EDT 2015

FORMULA

for main diagonal, a(k) = 2k^2 - 2k + 5 beginning at k=2. Avi Friedlich, Mar 31 2015

Discussion

Wed Apr 01

08:26

Avi Friedlich: thx.  I deleted my comment on this sequence.

#40 by Joerg Arndt at Wed Apr 01 06:30:46 EDT 2015

STATUS

proposed

editing

#39 by Avi Friedlich at Tue Mar 31 20:32:17 EDT 2015

STATUS

editing

proposed

Discussion

Tue Mar 31

21:09

Franklin T. Adams-Watters: Don't use a(k) this way; a(k) should always refer to the whole linear sequence. Write something like T(k,k) - or in this case T(k-1,k-1).

#38 by Avi Friedlich at Tue Mar 31 20:32:13 EDT 2015

FORMULA

for main diagonal, a(k) = 2k^2 - 2k + 5 beginning at k=2. Avi Friedlich, Mar 31 2015

STATUS

approved

editing

#37 by N. J. A. Sloane at Mon Sep 02 13:00:19 EDT 2013

STATUS

proposed

approved

#36 by Jon E. Schoenfield at Mon Sep 02 12:52:56 EDT 2013

STATUS

editing

proposed

#35 by Jon E. Schoenfield at Mon Sep 02 12:52:54 EDT 2013

EXTENSIONS

Minor edits by _Jon E. Schoenfield, _, Jun 23 2010

STATUS

approved

editing