The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A002659

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

A002659

a(n) = 2*sigma(n) - 1.
(history; published version)

#44 by Bruno Berselli at Fri Nov 17 04:03:29 EST 2017

STATUS

reviewed

approved

#43 by Peter Luschny at Fri Nov 17 04:00:57 EST 2017

STATUS

proposed

reviewed

#42 by Michel Marcus at Fri Nov 17 03:08:01 EST 2017

STATUS

editing

proposed

#41 by Michel Marcus at Fri Nov 17 03:07:57 EST 2017

CROSSREFS

Cf. A000203, A002660, A002791, A074400.

STATUS

proposed

editing

#40 by Antti Karttunen at Thu Nov 16 17:09:15 EST 2017

STATUS

editing

proposed

#39 by Antti Karttunen at Thu Nov 16 15:35:45 EST 2017

LINKS

Antti Karttunen, <a href="/A002659/b002659.txt">Table of n, a(n) for n = 1..16384</a>

<a href="/index/Si#SIGMAN">Index entries for sequences related to sigma(n)</a>

STATUS

approved

editing

#38 by Alois P. Heinz at Sun Oct 30 17:07:41 EDT 2016

STATUS

editing

approved

#37 by Alois P. Heinz at Sun Oct 30 17:07:35 EDT 2016

NAME

a(n) = 2*sigma(n) - 1.

STATUS

proposed

editing

#36 by Filip Zaludek at Sun Oct 30 16:41:16 EDT 2016

STATUS

editing

proposed

#35 by Filip Zaludek at Sun Oct 30 16:40:45 EDT 2016

FORMULA

a(n) = A074400(n) - 1. - Filip Zaludek, Oct 30 2016

STATUS

approved

editing