[seqfan] Re: Primes where every other digit is 1
njasloane at gmail.com
Fri Oct 22 07:56:12 CEST 2021
This 31,41,61,71,101,131,151,181,191,2131,2141 seems interesting - and it
makes a good puzzle, so yes, please submit it!
Neil J. A. Sloane, Chairman, 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 Thu, Oct 21, 2021 at 8:59 PM Lars Blomberg <lars.blomberg2 at hotmail.com>
> Is this of interest:
> 31,41,61,71,101,131,151,181,191,2131,2141, ...
> ... or 3,7,9.
> /Lars Blomberg
> Seqfan Mailing list - http://list.seqfan.eu/
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