%I A049268
%S A049268 0,2,3,0,5,6,7,8,0,1,2,3,1,5,6,0,8,9,10,11,3,7,11,15,0,9,18,7,5,21,22,
%T A049268 23,24,25,26,0,1,2,3,4,5,6,7,8,9,7,11,12,0,9,15,4,9,18,19,20,3,1,11,15,
%U A049268 1,23,27,0,9,18,7,32,15,31,11,36,1,9,39,19,17,42,43,44,0,1,2,3,1,2,6,7
%N A049268 Smallest nonnegative value taken on by nx^2 - 9y^2 for an infinite number 
               of integer pairs (x, y).
%Y A049268 Sequence in context: A145105 A140700 A055615 this_sequence A004179 A122830 
               A115562
%Y A049268 Adjacent sequences: A049265 A049266 A049267 this_sequence A049269 A049270 
               A049271
%K A049268 nonn
%O A049268 1,2
%A A049268 David W. Wilson (davidwwilson(AT)comcast.net)