Sum of how many squares of successive
positive integers is a square number?
Surprisingly enough, trivial answer discounted, only one number qualifies!
(In reply to Cannonball!
by Brian Smith)
a. You are right. My original intention was re sequence beginning with 1 and the proper beginning should have been "Consider the series 1^2+2^2+... n^2. " My bad.
b. Your formula lacks /6 on the right side of the equation. Please edit.
c. Never heard of "Cannonball" problem, will look it up. Tnx.