A049252 - OEIS

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

%S 1,2,1,1,5,7,5,5,1,3,2,1,0,13,13,4,13,13,2,5,7,10,1,13,12,13,1,5,1,13,

%T 6,5,7,13,10,1,5,10,13,12,7,3,1,8,7,2,5,4,3,2,1,0,13,13,13,13,13,5,2,

%U 13,1,13,13,13,13,13,2,13,13,7,13,13,5,13,13,8,13,13,1,5,1,3,2,13,8,13

%N Smallest nonnegative value taken on by 13x^2 - ny^2 for an infinite number of integer pairs (x, y).

%K nonn

%O 1,2

%A _David W. Wilson_