Over 2000 numbers are around a circle. Each number is the sum of its left and right neighbors.

Given that one of the numbers is a one, how many numbers (as a minimum) must there be?

(In reply to re(3): What now ? - you're right again !! by McWorter)

Mc, I never heard about "Claudio Buffara", though I'm interested in math and logic a long time (in fact, since I was born...).

Googling, I found poor material about it. But I confess that I didn't search too much.

How do you know him ?

By the way, I'm dreaming with 1's, x's, (1-x)'s... and the my best shot is still 2003. Let's see what I get today. (sorry for possible mistakes in my english).

Posted by pcbouhid on 2005-06-01 14:56:04