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Re^2: Spiraling integers

by ambrus (Abbot)
on Aug 30, 2005 at 11:47 UTC ( #487713=note: print w/replies, xml ) Need Help??


in reply to Re: Spiraling integers
in thread Spiraling integers

Easy, just subtract every number from n**2 + 1. See, here's the original spiral:

1 2 3 8 9 4 7 6 5
We subtract it from 10,
10-1 10-2 10-3 10-8 10-9 10-4 10-7 10-6 10-5 = 9 8 7 2 1 6 3 4 5

Also note that in my J solution, all you have to do is to change the /: operator to \:. Can you do this with a one-charater change to any other existing solutions? :)

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