login
Smallest nonnegative value taken on by nx^2 - 18y^2 for an infinite number of integer pairs (x, y).
0

%I #4 Mar 30 2012 18:35:39

%S 1,0,3,4,2,6,7,0,9,10,9,12,13,14,15,16,17,0,1,2,3,4,5,6,7,2,9,10,2,12,

%T 13,0,9,16,17,18,13,20,21,22,2,6,1,14,18,22,5,30,31,0,9,18,2,36,37,14,

%U 9,10,9,42,18,44,45,46,2,48,9,50,51,52,53,0,1,2,3,4,5,6,7,8,9,10,9,12

%N Smallest nonnegative value taken on by nx^2 - 18y^2 for an infinite number of integer pairs (x, y).

%K nonn

%O 1,3

%A _David W. Wilson_