The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A349931 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A349931

Numbers that have an equal number of factorizations of even and odd length in both unordered and ordered manners.
(history; published version)

#82 by Michael De Vlieger at Sun Jan 02 16:09:45 EST 2022

STATUS

proposed

approved

#81 by Jon E. Schoenfield at Sun Jan 02 16:09:23 EST 2022

STATUS

editing

proposed

Discussion

Sun Jan 02

16:09

Jon E. Schoenfield: (See recent edit at A319240.)

#80 by Jon E. Schoenfield at Sun Jan 02 16:09:21 EST 2022

COMMENTS

Similar numerical methods can be applied to all prime signatures.

STATUS

approved

editing

#79 by Peter Luschny at Thu Dec 23 12:36:34 EST 2021

STATUS

reviewed

approved

#78 by Michel Marcus at Mon Dec 20 12:47:30 EST 2021

STATUS

proposed

reviewed

#77 by Tian Vlasic at Mon Dec 20 10:24:02 EST 2021

STATUS

editing

proposed

#76 by Tian Vlasic at Mon Dec 20 10:23:57 EST 2021

COMMENTS

Out of all numbers of the form p*q^k, p and q prime, only the numbers of the form p*q (A006881), p*q^2 (A054753), p*q^4 (A178739) and p*q^6 (A189987) are terms.

STATUS

proposed

editing

#75 by Jon E. Schoenfield at Sun Dec 19 16:35:23 EST 2021

STATUS

editing

proposed

#74 by Jon E. Schoenfield at Sun Dec 19 16:35:19 EST 2021

COMMENTS

Intersection of A319240 and A013929, i.e. , terms of A319240 that are not squarefree.

STATUS

reviewed

editing

#73 by Michel Marcus at Sun Dec 19 13:43:45 EST 2021

STATUS

proposed

reviewed