[seqfan] Re: Anyone have a 3-D "Ulam" spiral?

[Neil Fernandez]

In message <CAEoHttUDr+Gg4O51ExU=8M=Uq9B6msURpYVFMH1YnOdy93OZrQ at mail.gma
il.com>, Hugo Pfoertner <yae9911 at gmail.com> writes

>A simpler 2-dimensional analogue of Maxmilian's idea is implemented in
>https://oeis.org/A305575 and https://oeis.org/A305576.

Hi,

Has anyone written the integers along that path and coloured in the
primes yet? That's an idea that surely somebody must have thought of
before?

And a sequence practically writes itself where a(n):= the square of the
modulus of the point occupied by the nth prime.

Neil

-- 
Neil Fernandez