The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A036907 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A036907

Square refactorable numbers.
(history; published version)

#16 by Harvey P. Dale at Sat Nov 21 13:23:37 EST 2020

STATUS

editing

approved

#15 by Harvey P. Dale at Sat Nov 21 13:23:33 EST 2020

LINKS

Harvey P. Dale, <a href="/A036907/b036907.txt">Table of n, a(n) for n = 1..1000</a>

STATUS

approved

editing

#14 by Harvey P. Dale at Sat Nov 21 13:22:24 EST 2020

STATUS

editing

approved

#13 by Harvey P. Dale at Sat Nov 21 13:22:21 EST 2020

MATHEMATICA

Select[Range[300]^2, Divisible[#, DivisorSigma[0, #]]&] (* Harvey P. Dale, Nov 21 2020 *)

STATUS

approved

editing

#12 by Joerg Arndt at Tue Dec 09 04:47:27 EST 2014

STATUS

proposed

approved

#11 by Michel Marcus at Tue Dec 09 04:36:02 EST 2014

STATUS

editing

proposed

#10 by Michel Marcus at Tue Dec 09 04:35:57 EST 2014

LINKS

S. Colton, <a href="http://www.cs.uwaterloo.ca/journals/JIS/indexcolton/joisol.html">Refactorable Numbers - A Machine Invention</a>, J. Integer Sequences, Vol. 2, 1999, #2.

S. Colton, <a href="http://web.archive.org/web/20070831060523/http://www.dai.ed.ac.uk/homes/simonco/research/hr/">HR - Automatic Theory Formation in Pure Mathematics</a> [broken link]

STATUS

approved

editing

#9 by Joerg Arndt at Sat Aug 31 06:02:01 EDT 2013

STATUS

editing

approved

#8 by Joerg Arndt at Sat Aug 31 06:01:52 EDT 2013

LINKS

S. Colton, <a href="http://www.dai.ed.ac.uk/homes/simonco/research/hr/">HR - Automatic Theory Formation in Pure Mathematics</a> [broken link]

STATUS

proposed

editing

#7 by Michel Marcus at Sat Aug 31 04:32:04 EDT 2013

STATUS

editing

proposed