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A196372 Positive integers a for which there is a primitive (-3)-Pythagorean triple (a,b,c) satisfying a<=b.

%I A196372 #5 Mar 30 2012 18:57:49
%S A196372 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 A196372 23,23,24,24,24,24,25,27,29,31,32,32,33,33,33,35,37,39,39,39,40,40,41,
%U A196372 43,45,47,48,48,48,48,49,51,51,51,53,55,56,56,56,57,57,57
%N A196372 Positive integers a for which there is a primitive (-3)-Pythagorean triple (a,b,c) satisfying a<=b.
%C A196372 See A195770 for definitions of k-Pythagorean triple, primitive k-Pythagorean triple, and lists of related sequences.
%e A196372 Primitive (-3)-Pythagorean triples a,b,c;
%e A196372 c^2=a^2+b^2-3*a*b:
%e A196372 1,3,1
%e A196372 3,8,1
%e A196372 3,16,11
%e A196372 5,39,31
%e A196372 7,24,11
%e A196372 7,72,61
%e A196372 8,21,1
%e A196372 8,33,19
%e A196372 9,35,19
%e A196372 9,115,101
%t A196372 (See A196369.)
%Y A196372 Cf. A195770, A196369, A196373, A196374.
%K A196372 nonn
%O A196372 1,2
%A A196372 _Clark Kimberling_, Oct 01 2011