A081874 Ordered odd short legs of primitive Pythagorean triangles.

3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 33, 35, 37, 39, 39, 41, 43, 45, 47, 49, 51, 51, 53, 55, 57, 57, 59, 61, 63, 65, 65, 67, 69, 69, 71, 73, 75, 75, 77, 79, 81, 83, 85, 85, 87, 87, 89, 91, 93, 93, 95, 95, 97, 99, 101, 103, 105, 105, 105, 107, 109, 111

Offset: 1

Author

Lekraj Beedassy, Apr 23 2003

Keywords

• nonn

Comments

Sequence comprises all odd values greater than 1. In particular, primitive Pythagorean triangles with consecutive longer sides have long and short legs 2n(n+1) {A046092(n)} and 2n+1 {A005408(n)} respectively.

Links

• Ray Chandler, Table of n, a(n) for n = 1..10000
• Ron Knott, Pythagorean Triples and Online Calculators

Crossrefs

Cf. A020884, A046092, A005408.

Extensions

Corrected and extended by Ray Chandler, Oct 29 2003