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

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, 23, 23, 24, 24, 24, 24, 25, 27, 29, 31, 32, 32, 33, 33, 33, 35, 37, 39, 39, 39, 40, 40, 41, 43, 45, 47, 48, 48, 48, 48, 49, 51, 51, 51, 53, 55, 56, 56, 56, 57, 57, 57

Offset: 1

Author

Clark Kimberling, Oct 01 2011

Keywords

• nonn

Comments

See A195770 for definitions of k-Pythagorean triple, primitive k-Pythagorean triple, and lists of related sequences.

Examples

			Primitive (-3)-Pythagorean triples a,b,c;
c^2=a^2+b^2-3*a*b:
1,3,1
3,8,1
3,16,11
5,39,31
7,24,11
7,72,61
8,21,1
8,33,19
9,35,19
9,115,101
		

Crossrefs

Cf. A195770, A196369, A196373, A196374.

Programs

Mathematica

(See A196369.)