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Smallest nonnegative value taken on by 18x^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 2,0,6,2,13,12,2,0,9,2,7,6,2,4,3,2,1,0,18,18,18,18,1,18,2,18,18,2,18,

%T 18,2,0,18,2,7,18,2,10,6,2,18,18,18,18,18,2,1,18,2,0,18,2,18,18,2,16,

%U 15,2,13,12,2,4,9,8,7,6,5,4,3,2,1,0,18,18,18,18,18,18,2,18,18,2,13,18

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

%K nonn

%O 1,1

%A _David W. Wilson_