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

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, 15, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 21, 22, 23, 24, 25, 26, 27, 28, 30, 30, 30, 33, 33, 34, 35, 35, 36, 38, 39, 39, 40, 42, 42, 42, 44, 45, 45

Offset

1,2

Comments

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

Links

Table of n, a(n) for n=1..66.

Example

Primitive (-6)-Pythagorean triples a,b,c;
c^2=a^2+b^2-6*a*b:
1,6,1
2,15,7
3,20,7
3,28,17
4,45,31
5,42,23
5,66,49
6,35,1
6,91,71
7,72,47

Mathematica

(See A196390.)

Crossrefs

Cf. A195770, A196390, A196394, A196395.

Sequence in context: A027923 A167743 A020888 * A274089 A357409 A086335

Adjacent sequences: A196390 A196391 A196392 * A196394 A196395 A196396

Keyword

nonn

Author

Clark Kimberling, Oct 01 2011

Status

approved