Y by
{a_1, a_2, \cdots, a_15} = {1, 2, \cdots, 15}
|a_1^2 - a_2^2| + |a_2^2 - a_3^2| + \cdots + |a_{15}^2 - a_1^2| = 458
Find number of (a_1, a_2, \cdots, a_15)
|a_1^2 - a_2^2| + |a_2^2 - a_3^2| + \cdots + |a_{15}^2 - a_1^2| = 458
Find number of (a_1, a_2, \cdots, a_15)