[seqfan] Re: A197680

[Vladimir Shevelev]

Neil, thank you!
Of course, you meant that 256 is not a member
(it is in alternative 2).

Best regards,
Vladimir
________________________________________
From: SeqFan [seqfan-bounces at list.seqfan.eu] on behalf of Neil Sloane [njasloane at gmail.com]
Sent: 15 November 2015 17:30
To: Sequence Fanatics Discussion list
Subject: [seqfan] Re: A197680

Alternative 1 is correct.  I don't think there is any ambiguity in the name.

256 is a member

I added a comment to explain the definition

Best regards
Neil

Neil J. A. Sloane, President, OEIS Foundation.
11 South Adelaide Avenue, Highland Park, NJ 08904, USA.
Also Visiting Scientist, Math. Dept., Rutgers University, Piscataway, NJ.
Phone: 732 828 6098; home page: http://NeilSloane.com
Email: njasloane at gmail.com


On Sun, Nov 15, 2015 at 3:50 AM, Vladimir Shevelev <shevelev at bgu.ac.il>
wrote:

> Is 256 a term of A197680?
> It seems that the name "Numbers whose
> prime factors have powers that are squares"
> is a bit ambiguous. There are two variants
> of the understanding it.
> 1) All exponents in prime power factorization
> of terms are squares;
> 2) All such exponents are squares or of the form
> k*m^2, where k,m>=2 ("have squares").
>  What is right?
> P.S. By 1), in Oct 14 I suggested a reformulation
> of the name: "Exponentially squares", but yet my
> comments have not been published.
>
> Best regards,
> Vladimir
>
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>
> Seqfan Mailing list - http://list.seqfan.eu/
>

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