A051518 Perimeters of Heronian triangles.

12, 16, 18, 24, 30, 32, 36, 40, 42, 44, 48, 50, 54, 56, 60, 64, 66, 68, 70, 72, 76, 78, 80, 84, 88, 90, 96, 98, 100, 104, 108, 110, 112, 114, 120, 126, 128, 130, 132, 136, 140, 144, 150, 152, 154, 156, 160, 162, 164, 168, 170, 172, 174, 176, 180, 182, 186, 190, 192, 196, 198, 200, 204

Offset: 1

Author

David W. Wilson

Keywords

• nonn

Comments

A triangle with integer sides and area is also called a Heronian triangle, and every such triangle can be positioned in the plane so that its three vertices have integer coordinates. - Peter Kagey, Jan 24 2018

Links

• Peter Kagey and Giovanni Resta, Table of n, a(n) for n = 1..10000 (first 1000 terms from Peter Kagey)
• Eric Weisstein's World of Mathematics, Heronian Triangle
• Wikipedia, Heronian triangle

Crossrefs

Cf. A096468, A298079.

Positions of nonzero values in A051516.

Extensions

Name changed by Wesley Ivan Hurt, May 16 2020