The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A158131 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A158131

a(n) = 121*n + 1.
(history; published version)

#23 by Alois P. Heinz at Mon Oct 17 17:32:20 EDT 2022

STATUS

editing

approved

#22 by Alois P. Heinz at Mon Oct 17 15:06:07 EDT 2022

LINKS

Vincenzo Librandi, <a href="http://mathforum.org/kb/message.jspa?messageID=5785989&tstart=0">X^2-AY^2=1</a> [broken link]

#21 by Alois P. Heinz at Mon Oct 17 15:01:48 EDT 2022

NAME

121n a(n) = 121*n + 1.

STATUS

approved

editing

Discussion

Mon Oct 17

15:02

Alois P. Heinz: this should also have a(0)=1 ...

#20 by Harvey P. Dale at Mon Oct 17 14:52:48 EDT 2022

STATUS

editing

approved

#19 by Harvey P. Dale at Mon Oct 17 14:52:46 EDT 2022

MATHEMATICA

121*Range[50]+1 (* Harvey P. Dale, Oct 17 2022 *)

STATUS

approved

editing

#18 by Charles R Greathouse IV at Thu Sep 08 08:45:42 EDT 2022

PROG

(MAGMAMagma) I:=[122, 243]; [n le 2 select I[n] else 2*Self(n-1)-Self(n-2): n in [1..50]];

Discussion

Thu Sep 08

08:45

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

#17 by Charles R Greathouse IV at Sat Jun 17 03:04:47 EDT 2017

LINKS

<a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1).

Discussion

Sat Jun 17

03:04

OEIS Server: https://oeis.org/edit/global/2665

#16 by Charles R Greathouse IV at Sat Jun 13 00:53:03 EDT 2015

LINKS

<a href="/index/Rec">Index to sequences with entries for linear recurrences with constant coefficients</a>, signature (2,-1).

Discussion

Sat Jun 13

00:53

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

#15 by Charles R Greathouse IV at Fri Jun 12 15:33:05 EDT 2015

LINKS

<a href="/index/Rec#recLCC">Index to sequences with linear recurrences with constant coefficients</a>, signature (2,-1).

Discussion

Fri Jun 12

15:33

OEIS Server: https://oeis.org/edit/global/2437

#14 by Charles R Greathouse IV at Fri Jun 12 15:19:14 EDT 2015

LINKS

<a href="/Sindx_Rea.htmlindex/Rec#recLCC">Index to sequences with linear recurrences with constant coefficients</a>, signature (2,-1).

Discussion

Fri Jun 12

15:19

OEIS Server: https://oeis.org/edit/global/2434