The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A260934

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A260934

Sum of evil divisors of n. For evil numbers see A001969.
(history; published version)

#12 by Michel Marcus at Wed Nov 13 10:12:53 EST 2019

STATUS

editing

approved

#11 by Michel Marcus at Wed Nov 13 10:11:54 EST 2019

EXTENSIONS

Edited: - _ by _Wolfdieter Lang_, Aug 23 2015

STATUS

reviewed

editing

#10 by Joerg Arndt at Wed Nov 13 09:11:30 EST 2019

STATUS

proposed

reviewed

#9 by Amiram Eldar at Wed Nov 13 08:54:49 EST 2019

STATUS

editing

proposed

#8 by Amiram Eldar at Wed Nov 13 08:47:02 EST 2019

LINKS

Amiram Eldar, <a href="/A260934/b260934.txt">Table of n, a(n) for n = 1..10000</a>

STATUS

approved

editing

#7 by Wolfdieter Lang at Sun Aug 23 17:35:07 EDT 2015

STATUS

editing

approved

#6 by Wolfdieter Lang at Sun Aug 23 17:34:59 EDT 2015

NAME

Sum of evil divisors of n. For evil numbers see A001969.

COMMENTS

a(n) = 0 if there is no evil divisor.

CROSSREFS

Cf. A001969, A227873, A000203.

EXTENSIONS

Edited: - Wolfdieter Lang, Aug 23 2015

STATUS

proposed

editing

#5 by Michael De Vlieger at Tue Aug 04 14:44:27 EDT 2015

STATUS

editing

proposed

#4 by Michael De Vlieger at Tue Aug 04 14:44:25 EDT 2015

MATHEMATICA

Total[Select[Divisors@ #, EvenQ@ First@ DigitCount[#, 2] &]] & /@ Range@ 65 (* Michael De Vlieger, Aug 04 2015 *)

STATUS

proposed

editing

#3 by Juri-Stepan Gerasimov at Tue Aug 04 14:32:25 EDT 2015

STATUS

editing

proposed