Date: Feb 4, 2013 10:05 AM
Author: mluttgens
Subject: A quicker way?

Let n^2 = N + a^2, where n, N and a are integers.
Knowing N, it is of course possible to find n by trying a = 1, 2, 3, 4, etc...
But doesn't exist a quicker way ? 

Thank you,

Marcel