The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A263227

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

A263227

a(n) = n*(67*n - 89)/2.
(history; published version)

#21 by Charles R Greathouse IV at Thu Sep 08 08:46:14 EDT 2022

PROG

(MAGMAMagma) [n*(67*n-89)/2: n in [0..40]]; // Bruno Berselli, Oct 15 2015

Discussion

Thu Sep 08

08:46

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

#20 by Alois P. Heinz at Mon Feb 26 17:01:53 EST 2018

STATUS

proposed

approved

#19 by Andrew Howroyd at Mon Feb 26 15:58:29 EST 2018

STATUS

editing

proposed

#18 by Andrew Howroyd at Mon Feb 26 15:13:31 EST 2018

LINKS

<a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (3,-1,3,1).

STATUS

approved

editing

Discussion

Mon Feb 26

15:13

Andrew Howroyd: As 2nd formula 3*a(n-1) - 3*a(n-2) + a(n-3)

#17 by Bruno Berselli at Thu Oct 15 09:50:18 EDT 2015

STATUS

editing

approved

#16 by Bruno Berselli at Thu Oct 15 09:50:15 EDT 2015

CROSSREFS

Cf. A049598, A263226, A263228, A263229, A263230, A263231.

STATUS

approved

editing

#15 by Bruno Berselli at Thu Oct 15 09:38:03 EDT 2015

STATUS

editing

approved

#14 by Bruno Berselli at Thu Oct 15 09:37:57 EDT 2015

PROG

(MAGMA) I:=[0, -11, 45]; [n le 3 select I[n] else 3*Self(n-1)-3*Self(n-2)+Self(n-3): n in [1..50]]; // Vincenzo Librandi, Oct 13 2015

(MAGMA) [n*(67*n-89)/2: n in [0..40]]; // Bruno Berselli, Oct 15 2015

STATUS

approved

editing

#13 by Peter Luschny at Tue Oct 13 14:07:14 EDT 2015

STATUS

reviewed

approved

#12 by Emeric Deutsch at Tue Oct 13 06:45:24 EDT 2015

STATUS

proposed

reviewed