%I #5 Mar 30 2012 18:57:49
%S 1,3,3,3,3,5,5,5,7,8,8,8,9,9,11,13,13,15,15,15,15,15,16,16,16,17,17,
%T 19,19,21,21,23,23,24,24,24,24,25,27,29,31,32,32,33,35,37,39,39,39,39,
%U 40,40,40,41,43,45,45,45,47,48,48,51,51,51,53,55,56
%N Positive integers a for which there is a primitive 9-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 9-Pythagorean triples a,b,c;
%e c^2=a^2+b^2+9*a*b:
%e 1,15,19
%e 3,5,13
%e 3,8,17
%e 3,13,23
%e 3,160,173
%e 5,24,41
%e 5,48,67
%e 5,459,481
%e 7,57,83
%e 8,15,37
%t (See A196183.)
%Y Cf. A195770, A196183, A196187, A196188.
%K nonn
%O 1,2
%A _Clark Kimberling_, Sep 29 2011