A196365 Positive integers a for which there is a primitive (-5/2)-Pythagorean triple (a,b,c) satisfying a<=b.

2, 3, 5, 7, 7, 10, 10, 11, 11, 13, 14, 15, 15, 16, 16, 16, 17, 18, 19, 19, 22, 23, 23, 25, 26, 26, 27, 29, 31, 32, 32, 32, 34, 34, 35, 35, 35, 37, 38, 39, 41, 42, 43, 46, 47, 48, 48, 50, 51, 55, 55, 55, 58, 59, 62, 63, 64, 64, 64, 65, 66, 67, 70, 71, 74, 75, 77, 79

Offset

1,1

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 (-5/2)-Pythagorean triples a,b,c;
c^2=a^2+b^2-(5/2)*a*b:
2,5,2
3,14,10
5,16,9
7,16,5
7,64,55
10,21,4
10,69,56
11,30,14
11,150,136
13,80,63

Mathematica

(See A196362.)

Crossrefs

Cf. A195770, A196362, A196366, A196367.

Sequence in context: A306923 A366856 A137750 * A195882 A332333 A156900

Adjacent sequences: A196362 A196363 A196364 * A196366 A196367 A196368

Keyword

nonn

Author

Clark Kimberling, Oct 01 2011

Status

approved