[seqfan] Re: A278567...

Neil Sloane njasloane at gmail.com
Sun Nov 27 16:08:40 CET 2016


Don - Thanks!  Your version is now A278570. (Needs a b-file.)

By the way, the old name for A046389 was "Odd numbers with exactly 3
distinct prime factors", which is slightly ambiguous, since it might be
interpreted to include 315 = 3^2*5*7. I changed it to read Products of
exactly three distinct odd primes.  The more inclusive interpretation of
A046389 is now A278569.

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 27, 2016 at 12:43 AM, Don Reble <djr at nk.ca> wrote:

> Don, what would the definition be for your version?
>>
>
>    a(n) = the maximum absolute value of coefficients in the
>    A046389(n)'th cyclotomic polynomial. A046389 has the numbers,
>    each a product of three distinct odd primes.
>
>
> --
> Don Reble  djr at nk.ca
>
>
> --
> Seqfan Mailing list - http://list.seqfan.eu/
>


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