[seqfan] Re: Magic squares of primes(?)

Rick Shepherd rlshepherd2 at gmail.com
Sun Aug 21 21:34:17 CEST 2016


See oeis.org/draft/A276132, where I posed some related questions about
nested such squares. (It may be several days before I can get back to
this.) -- Rick
On Aug 20, 2016 1:28 AM, "Emmanuel Vantieghem" <emmanuelvantieghem at gmail.com>
wrote:

> You find a 'stronger' problem at
> http://www.primepuzzles.net/puzzles/puzz_004.htm
>
> 2016-08-19 20:15 GMT+02:00 Zak Seidov <seqfan at list.seqfan.eu>:
>
> >  Fill NxN square with decimal digits
> > such that
> > all rows/columns and 2 main diagonals read primes.
> > Simple(st?) 3x3 case:
> > 227
> > 727
> > 733
> > with 227,727,733,277,223,773,223 and 727 all primes.
> > Cases with all primes distinct?
> > Larger (largest?) cases?
> > Old hat?
> > zak
> >
> >
> >
> >
> > --
> > Seqfan Mailing list - http://list.seqfan.eu/
> >
>
> --
> Seqfan Mailing list - http://list.seqfan.eu/
>


More information about the SeqFan mailing list