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

[Rick Shepherd]

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
> >
> >
> >
> >
> > --
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> >
>
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