[seqfan] Re: See A007427 and A231122

Frank Adams-Watters franktaw at netscape.net
Wed Mar 23 06:04:41 CET 2016


If u is a unitary divisor of n, n/u is always also a unitary of divisor of n.

Franklin T. Adams-Watters


-----Original Message-----
From: юрий герасимов <2stepan at rambler.ru>
To: benoit7848c <benoit7848c at yahoo.fr>; seqfan <seqfan at list.seqfan.eu>
Sent: Tue, Mar 22, 2016 9:32 pm
Subject: [seqfan] See A007427 and A231122

Dear SeqFans. 
                                                                  
See A231122 and comment (and formula) of A007427.                               

Abs(A007427(n)) is the number of unitary divisors u|n such that n/u is also unitary divisor of n?                       

New comment of A007427 or new sequence for OEIS ?                                                                               

Thanks. JSG.--Seqfan Mailing list - http://list.seqfan.eu/


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