The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A048258

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
newer changes | Showing entries 11-20 | older changes

A048258

Integers whose sum of divisors is an 8th power.
(history; published version)

#19 by Michel Marcus at Tue Aug 16 07:51:05 EDT 2016

STATUS

editing

proposed

#18 by Michel Marcus at Tue Aug 16 07:50:58 EDT 2016

LINKS

Frits Beukers, Florian Luca and Frans Oort, <a href="http://www.jstor.org/stable/10.4169/amer.math.monthly.119.05.373">Power Values of Divisor Sums</a>, The American Mathematical Monthly, Vol. 119, No. 5 (May 2012), pp. 373-380.

STATUS

approved

editing

#17 by Joerg Arndt at Tue Dec 31 05:32:44 EST 2013

STATUS

proposed

approved

#16 by Michel Marcus at Mon Dec 30 17:21:08 EST 2013

STATUS

editing

proposed

#15 by Michel Marcus at Mon Dec 30 17:20:57 EST 2013

CROSSREFS

Cf. A006532, A020477, A019422, A019423, A019424, A048251-A048257.

STATUS

proposed

editing

Discussion

Mon Dec 30

17:21

Michel Marcus: Thanks.

#14 by Michel Marcus at Mon Dec 30 17:12:14 EST 2013

STATUS

editing

proposed

Discussion

Mon Dec 30

17:16

Donovan Johnson: I think it should be A019424.

17:20

Michel Marcus: By Jove, you're right.

#13 by Michel Marcus at Mon Dec 30 17:12:08 EST 2013

CROSSREFS

Cf. A006532, A020477, A019422, A019423, A018427, A048251-A048257.

STATUS

proposed

editing

#12 by Donovan Johnson at Mon Dec 30 17:00:58 EST 2013

STATUS

editing

proposed

Discussion

Mon Dec 30

17:09

Michel Marcus: Yes A018427   Divisors of 387.
Nine sequences have it: A048251, A048252, A048253, A048254, A048255, A048256, A048257, A048258.
And none of them include 387.

17:11

Michel Marcus: OK. I remove it from here to begin with.
Maybe it is a typo that we will find out later.

#11 by Donovan Johnson at Mon Dec 30 16:48:46 EST 2013

DATA

1, 217, 57337, 600270, 621690, 669990, 685290, 693294, 693770, 699810, 725934, 747670, 769930, 774894, 782598, 805970, 813378, 823938, 835670, 839802, 854930, 865490, 873334, 895594, 918435, 920414, 923410, 931634, 935715, 959565, 965174, 969034, 969206

LINKS

Donovan Johnson, <a href="/A048258/b048258.txt">Table of n, a(n) for n = 1..1000</a>

CROSSREFS

Cf. A006532, A020477, A019422, A019423, A018427, A048251-A048257.

STATUS

proposed

editing

Discussion

Mon Dec 30

17:00

Donovan Johnson: A048257 also has A018427 as a xref. I think it could be removed in both sequences.

#10 by Michel Marcus at Mon Dec 30 12:02:42 EST 2013

STATUS

editing

proposed