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 What now ? by pcbouhid)

But then, if I am not mistaken, the next number following the last 0 is -1, giving (-1) (0) (-1), this last number being the second number in your string of 6.  But 0 is not equal to (-1)+(-1)=-2.

Posted by McWorter on 2005-06-01 00:21:05