[seqfan] Re: Conjectured sequences in the OEIS

[Alonso Del Arte]

Some cases are clearer than others. There are a lot of sequences "numbers n
such that (c^n - 1)/(c - 1) is prime." Some of them have comments stating
that some of the larger terms in the Data field are strong probable primes,
as opposed to confirmed primes.

And then there's A242797, Numbers n such that (45^n - 1)/44 is prime. It
seems to me that the first three terms, 19, 53, 167, can be confirmed
easily enough, with less than an hour of computer time for each. But 3319
seems to require at least a day to confirm.

Al


On Thu, May 22, 2014 at 2:34 PM, Neil Sloane <njasloane at gmail.com> wrote:

> Dear Seq Fans,
> Max Alekseyev pointed out that we should clarify our policy on  sequences
> with one or more conjectured terms. In fact, the way we handle such
> sequences depends on many factors - we don't have a single rule that covers
> everything. Yet we do have rules. I have described the situation as I see
> it in a new section in the Style Sheet page on the wiki:
> *https://oeis.org/wiki/Style_Sheet
> <https://oeis.org/wiki/Style_Sheet>*
>
> *Neil*
>
> --
> Dear Friends, I have now retired from AT&T. New coordinates:
>
> 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
>
> _______________________________________________
>
> Seqfan Mailing list - http://list.seqfan.eu/
>



-- 
Alonso del Arte
Author at SmashWords.com<https://www.smashwords.com/profile/view/AlonsoDelarte>
Musician at ReverbNation.com <http://www.reverbnation.com/alonsodelarte>