[seqfan] Re: Is A014664 a permutation?

[Neil Sloane]

Thanks for the corrections to A268533. I have recycled it.

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, Feb 21, 2016 at 10:29 PM, M. F. Hasler <seqfan at hasler.fr> wrote:

> But 2^17-1 = 131071 is prime, and znorder(Mod(2,131071)) = 17,
> so 17 =  A014664(131071) should not be in A268533 ...
>
> What method was used to produce the data in A268533 ?
>
> Maximilian
>
>
> On Sun, Feb 21, 2016 at 2:20 PM, Neil Sloane <njasloane at gmail.com> wrote:
>
> > 6 seems to be missing from A014664, and 11 appears twice, so probably
> not a
> > perm.
> >
> > 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, Feb 21, 2016 at 12:51 PM, Felix Fröhlich <felix.froe at gmail.com>
> > wrote:
> >
> > > Dear SeqFans,
> > >
> > > is A014664 the same as smallest k > 1 not already in the sequence such
> > that
> > > p = prime(n) is a factor of 2^k-1? If the answer is yes, is the
> sequence
> > a
> > > permutation of the positive integers > 1?
> > >
> > > I added this as a comment to the sequence, but maybe if someone knows
> the
> > > answer to this question, it could be added as a definitive statement
> > > instead.
> > >
> > > Best regards
> > > Felix Fröhlich
> > >
> > > _______________________________________________
> > >
> > > Seqfan Mailing list - http://list.seqfan.eu/
> > >
> >
> > _______________________________________________
> >
> > Seqfan Mailing list - http://list.seqfan.eu/
> >
> > --
> > Maximilian
> > <http://list.seqfan.eu/>
> >
>
> _______________________________________________
>
> Seqfan Mailing list - http://list.seqfan.eu/
>