Thomas de Groot <tho### [at] degrootorg> wrote:
> Op 24/02/2022 om 17:57 schreef Robert McGregor:
> > A simple Ulam spiral displaying the locations of the first 2088 prime numbers
> ... First time I heard about an ulam spiral...
same here. v pleasing, visually. the Wikipedia page shows that other
arrangements are .. permissible. attached shows primes marked on a Hilbert
Curve (sphere_sweep, 4096 points), more "patterns". (I wonder how much of those
"patterns" is just the result of a desire to see patterns. :-))
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