The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A072461 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A072461

Numbers k such that sigma(k) == 1 (mod 4).
(history; published version)

#19 by Alois P. Heinz at Wed Jun 26 04:21:39 EDT 2024

STATUS

proposed

approved

#18 by Antti Karttunen at Wed Jun 26 03:45:01 EDT 2024

STATUS

editing

proposed

#17 by Antti Karttunen at Wed Jun 26 03:44:19 EDT 2024

CROSSREFS

Positions of 1's in A105824.

STATUS

reviewed

editing

Discussion

Wed Jun 26

03:45

Antti Karttunen: Had to add that.

#16 by Joerg Arndt at Wed Jun 26 03:04:07 EDT 2024

STATUS

proposed

reviewed

#15 by Amiram Eldar at Wed Jun 26 02:53:47 EDT 2024

STATUS

editing

proposed

Discussion

Wed Jun 26

02:53

Amiram Eldar: ok?

#14 by Amiram Eldar at Wed Jun 26 02:53:35 EDT 2024

EXTENSIONS

Name edited by Michel Marcus, Dec 19 2013 and _Amiram Eldar_, Jun 26 2024

STATUS

proposed

editing

#13 by Amiram Eldar at Wed Jun 26 02:30:30 EDT 2024

STATUS

editing

proposed

Discussion

Wed Jun 26

02:52

Michel Marcus: add extension ? remove extension ?

#12 by Amiram Eldar at Wed Jun 26 01:46:13 EDT 2024

NAME

SigmaNumbers k such that sigma(nk) == 1 (mod 4).

CROSSREFS

Cf. A000203, A028982, A072462, A081339.

STATUS

approved

editing

#11 by OEIS Server at Thu Feb 20 09:31:43 EST 2020

LINKS

Ray Chandler, <a href="/A072461/b072461_1.txt">Table of n, a(n) for n = 1..10000</a> (first 1000 terms from Harvey P. Dale)

#10 by Ray Chandler at Thu Feb 20 09:31:43 EST 2020

STATUS

editing

approved

Discussion

Thu Feb 20

09:31

OEIS Server: Installed new b-file as b072461.txt.  Old b-file is now b072461_1.txt.