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Smallest nonnegative value taken on by 15x^2 - ny^2 for an infinite number of integer pairs (x, y).
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%I #4 Mar 30 2012 18:35:39

%S 6,7,3,11,10,6,8,7,6,5,1,3,2,1,0,15,15,15,15,15,15,15,7,15,15,6,15,15,

%T 10,15,11,7,3,15,15,15,2,10,15,15,6,15,15,4,15,14,13,12,11,10,9,8,7,6,

%U 5,4,3,2,1,0,15,15,15,15,15,15,15,15,15,15,1,15,15,6,15,15,15,15,15,15

%N Smallest nonnegative value taken on by 15x^2 - ny^2 for an infinite number of integer pairs (x, y).

%K nonn

%O 1,1

%A _David W. Wilson_