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%I #5 Mar 30 2012 18:57:49
%S 1,3,3,5,7,7,8,8,9,9,11,11,13,13,15,15,16,16,17,17,19,19,21,21,21,21,
%T 23,23,24,24,24,24,25,27,29,31,32,32,33,33,33,35,37,39,39,39,40,40,41,
%U 43,45,47,48,48,48,48,49,51,51,51,53,55,56,56,56,57,57,57
%N Positive integers a for which there is a primitive (-3)-Pythagorean triple (a,b,c) satisfying a<=b.
%C See A195770 for definitions of k-Pythagorean triple, primitive k-Pythagorean triple, and lists of related sequences.
%e Primitive (-3)-Pythagorean triples a,b,c;
%e c^2=a^2+b^2-3*a*b:
%e 1,3,1
%e 3,8,1
%e 3,16,11
%e 5,39,31
%e 7,24,11
%e 7,72,61
%e 8,21,1
%e 8,33,19
%e 9,35,19
%e 9,115,101
%t (See A196369.)
%Y Cf. A195770, A196369, A196373, A196374.
%K nonn
%O 1,2
%A _Clark Kimberling_, Oct 01 2011
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