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Re: Spiraling integers

by ambrus (Abbot)
on Dec 03, 2007 at 19:50 UTC ( #654639=note: print w/replies, xml ) Need Help??


in reply to Spiraling integers

I wonder if that challenge site is perhaps ProjectEuler. Their problem 28 has a spiral like this. (It starts from the inside, but that's trivial to fix.)

Update: This thread in the J programming mailing list is how I found out about that projecteuler problem.

Update 1008 jan 10: I forgot to tell, here's my reply to that thread

Replies are listed 'Best First'.
Re^2: Spiraling integers
by atcroft (Abbot) on Dec 03, 2007 at 20:37 UTC

    Hadn't looked, myself, although I realized from your mention of the outward spiral that that one would be the base used in to produce a Ulam spiral (which I know has been asked about here before).

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