The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A073182

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Showing entries 1-10 | older changes

Number of divisors of n which are not greater than the cubefree kernel of n.
(history; published version)

#15 by N. J. A. Sloane at Tue Jul 18 11:43:24 EDT 2017

STATUS

proposed

#14 by Michael De Vlieger at Tue Jul 18 10:12:10 EDT 2017

STATUS

editing

#13 by Michael De Vlieger at Tue Jul 18 10:12:08 EDT 2017

MATHEMATICA

STATUS

proposed

#12 by Antti Karttunen at Tue Jul 18 09:53:00 EDT 2017

STATUS

editing

#11 by Antti Karttunen at Tue Jul 18 09:52:01 EDT 2017

LINKS

EXAMPLE

The cubefree kernel of 56=7*2^3 is 28=7*2^2 and the divisors <= 28 of 56 are {1, 2, 4, 7, 8, 14, 28}, therefore a(56)=7.

CROSSREFS

STATUS

approved

#10 by Michel Marcus at Thu May 14 02:54:51 EDT 2015

STATUS

reviewed

#9 by Joerg Arndt at Thu May 14 02:46:26 EDT 2015

STATUS

proposed

#8 by Michel Marcus at Thu May 14 00:55:25 EDT 2015

STATUS

editing

Discussion

Thu May 14

00:57

Michel Marcus: A073183  too ?

#7 by Michel Marcus at Thu May 14 00:54:49 EDT 2015

PROG

STATUS

reviewed

#6 by Tom Edgar at Wed May 13 23:53:24 EDT 2015

STATUS

proposed