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A196393 Positive integers a for which there is a primitive (-6)-Pythagorean triple (a,b,c) satisfying a<=b. 6

%I

%S 1,2,3,3,4,5,5,6,6,7,7,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,15,

%T 15,16,17,17,18,18,19,19,20,20,21,21,21,22,23,24,25,26,27,28,30,30,30,

%U 33,33,34,35,35,36,38,39,39,40,42,42,42,44,45,45

%N Positive integers a for which there is a primitive (-6)-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 (-6)-Pythagorean triples a,b,c;

%e c^2=a^2+b^2-6*a*b:

%e 1,6,1

%e 2,15,7

%e 3,20,7

%e 3,28,17

%e 4,45,31

%e 5,42,23

%e 5,66,49

%e 6,35,1

%e 6,91,71

%e 7,72,47

%t (See A196390.)

%Y Cf. A195770, A196390, A196394, A196395.

%K nonn

%O 1,2

%A _Clark Kimberling_, Oct 01 2011

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Last modified August 21 23:28 EDT 2019. Contains 326169 sequences. (Running on oeis4.)