[seqfan] Re: definition of A216677 (sq's dividing prod. of divs of n)

[Chris Gribble]

According to the examples, each square involves each prime divisor of n
raised to an even power excluding zero.

Best wishes,

Chris Gribble

-----Original Message-----
From: SeqFan [mailto:seqfan-bounces at list.seqfan.eu] On Behalf Of mathar
Sent: 18 September 2012 09:18
To: seqfan at seqfan.eu
Subject: [seqfan] definition of A216677 (sq's dividing prod. of divs of n)

Can anybody decipher what the actual definition of
http://oeis.org/A216677 might be? This counts squares which divide the
product of all divisors of n (sounds
trivial) but seems to reject squares which miss some sort of criterion (to
be defined). The criterion is probably related to a request that all squares
need to have a set of divisors which encompasses at least the prime divisors
of n.

Some email exchange with the author did not yield much progress on the
theme.

-- 
Richard J. Mathar               phone (+49) (0) 6221 528 382
Max-Planck Institut f. Astronomie Fax (+49) (0) 6221 528 246 Konigstuhl 17
69117 Heidelberg E-mail mathar at mpia.de Skype matharrj
Germany          URL http://www.mpia.de/~mathar 
cell phone (+49) (0) 177 3834227 (E-plus) office 028B

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