A196386 Positive integers a for which there is a primitive (-5)-Pythagorean triple (a,b,c) satisfying a<=b.

1, 1, 3, 3, 5, 5, 5, 5, 7, 7, 8, 8, 8, 8, 9, 9, 11, 11, 11, 11, 13, 13, 13, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 19, 19, 19, 21, 23, 23, 24, 24, 24, 24, 25, 25, 27, 29, 29, 31, 31, 32, 32, 32, 33, 33, 35, 35, 37, 39, 39, 40, 40, 40, 40, 40, 40, 40, 41

Offset

1,3

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..68.

Example

Primitive (-5)-Pythagorean triples a,b,c;
c^2=a^2+b^2-5*a*b:
1,5,1
1,8,5
3,16,5
3,55,47
5,24,1
5,33,17
5,57,43
5,144,131
7,104,85
7,275,257

Mathematica

(See A196383.)

Crossrefs

Cf. A195770, A196383, A196387, A196388.

Sequence in context: A251549 A129972 A130829 * A035158 A196172 A123313

Adjacent sequences: A196383 A196384 A196385 * A196387 A196388 A196389

Keyword

nonn

Author

Clark Kimberling, Oct 01 2011

Status

approved