The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A070015 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A070015

Least m such that the sum of the aliquot parts of m (A001065) equals n, or 0 if no such number exists.
(history; published version)

#31 by N. J. A. Sloane at Tue Jan 10 14:34:16 EST 2023

STATUS

editing

approved

#30 by N. J. A. Sloane at Tue Jan 10 14:34:15 EST 2023

CROSSREFS

See A359132 for another version.

STATUS

approved

editing

#29 by Susanna Cuyler at Wed Mar 25 06:52:08 EDT 2020

STATUS

proposed

approved

#28 by Michel Marcus at Wed Mar 25 03:26:36 EDT 2020

STATUS

editing

proposed

#27 by Michel Marcus at Wed Mar 25 03:26:26 EDT 2020

EXAMPLE

For n=128: a(n128)=16129, divisors={1,127,16129}, 1+127=sigma[(n])-n=128 and 16129 is the smallest.

STATUS

approved

editing

#26 by Jon E. Schoenfield at Sat Mar 02 03:11:33 EST 2019

STATUS

editing

approved

#25 by Jon E. Schoenfield at Sat Mar 02 03:11:31 EST 2019

LINKS

Richard J. Mathar and Robert G. Wilson v, <a href="/A070015/b070015.txt">Table of n, a(n) for n = 1..10000</a> First (first 9884 terms from Richard J. Mathar.)

STATUS

approved

editing

#24 by OEIS Server at Fri Jul 11 00:26:53 EDT 2014

LINKS

Richard J. Mathar and Robert G. Wilson v, <a href="/A070015/b070015_1.txt">Table of n, a(n) for n = 1..10000</a> First 9884 from Richard J. Mathar.

#23 by Wesley Ivan Hurt at Fri Jul 11 00:26:53 EDT 2014

STATUS

reviewed

approved

Discussion

Fri Jul 11

00:26

OEIS Server: Installed new b-file as b070015.txt.  Old b-file is now b070015_1.txt.

#22 by Robert Israel at Fri Jul 11 00:18:42 EDT 2014

STATUS

proposed

reviewed