A196172 Positive integers a for which there is a primitive 7-Pythagorean triple (a,b,c) satisfying a<=b.

1, 1, 3, 3, 5, 5, 5, 7, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 11, 11, 11, 11, 13, 13, 13, 13, 16, 16, 16, 16, 17, 17, 17, 17, 19, 19, 19, 19, 21, 23, 23, 23, 24, 24, 25, 29, 29, 31, 31, 32, 32, 32, 32, 33, 35, 37, 39, 40, 40, 41, 43, 45

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..62.

Example

Primitive 7-Pythagorean triples a,b,c;
c^2=a^2+b^2+7a*b:
1,1,3
1,8,11
3,11,19
3,91,101
5,16,29
5,77,93
5,264,281
7,16,33
7,39,59
7,87,109

Mathematica

(See A196169.)

Crossrefs

Cf. A195770, A196169, A196173, A196174.

Sequence in context: A130829 A196386 A035158 * A123313 A131507 A203998

Adjacent sequences: A196169 A196170 A196171 * A196173 A196174 A196175

Keyword

nonn

Author

Clark Kimberling, Sep 29 2011

Status

approved