The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A017605 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A017605

a(n) = 12*n + 7.
(history; published version)

#45 by Peter Luschny at Wed Apr 03 05:07:32 EDT 2024

STATUS

reviewed

approved

#44 by Michel Marcus at Wed Apr 03 00:18:42 EDT 2024

STATUS

proposed

reviewed

#43 by Elmo R. Oliveira at Tue Apr 02 22:49:03 EDT 2024

STATUS

editing

proposed

#42 by Elmo R. Oliveira at Tue Apr 02 22:48:16 EDT 2024

FORMULA

From Elmo R. Oliveira, Apr 02 2024: (Start)

G.f.: (7+5*x)/(1-x)^2.

E.g.f.: exp(x)*(7 + 12*x).

a(n) = A049453(n+1) - A049453(n) = A142241(n)/2. (End)

CROSSREFS

Cf. A000217, A003215, A049453, A142241.

STATUS

approved

editing

#41 by Sean A. Irvine at Thu Aug 19 01:42:51 EDT 2021

STATUS

proposed

approved

#40 by Michel Marcus at Wed Jul 28 02:56:05 EDT 2021

STATUS

editing

proposed

#39 by Michel Marcus at Wed Jul 28 02:55:58 EDT 2021

CROSSREFS

Cf. A000217, A003215.

STATUS

proposed

editing

Discussion

Wed Jul 28

02:56

Michel Marcus: yes ok

#38 by Leo Tavares at Mon Jul 26 12:35:42 EDT 2021

STATUS

editing

proposed

Discussion

Mon Jul 26

12:36

Leo Tavares: Sorry Michel. I just fixed it.

#37 by Leo Tavares at Mon Jul 26 12:35:31 EDT 2021

FORMULA

a(n) = A003215(n+1) - 6*A000217(n-21). - Leo Tavares, Jul 25 2021

STATUS

proposed

editing

#36 by Leo Tavares at Mon Jul 26 12:17:50 EDT 2021

STATUS

editing

proposed

Discussion

Mon Jul 26

12:18

Leo Tavares: Thanks Michel :)

12:24

Michel Marcus: your formula is not ok it gives 1, 19, 37, 55, 73, 91, 109, 127, 145, 163, 181, 199, ...  (you only shifted A003215)