A099831 Perimeters of Pythagorean triangles that can be constructed in exactly 2 different ways.

60, 84, 90, 132, 144, 210, 264, 270, 288, 300, 312, 330, 390, 408, 432, 440, 450, 456, 462, 468, 510, 520, 546, 552, 570, 576, 588, 612, 616, 680, 684, 690, 700, 728, 760, 770, 800, 810, 816, 828, 870, 910, 912, 918, 920, 952, 1044, 1064, 1100, 1104, 1116

Offset

1,1

Links

Ray Chandler, Table of n, a(n) for n = 1..10000

Ron Knott, Pythagorean Triples and Online Calculators

Eric Weisstein's World of Mathematics, Pythagorean Triple.

Index entries related to Pythagorean Triples.

Example

a(1)=60 = 10+24+26 = 15+20+25; a(2)=84 = 12+35+37 = 21+28+35.

Crossrefs

Cf. A098714, A099382, A099383, A156687.

Sequence in context: A085987 A356413 A086974 * A306222 A138604 A350140

Adjacent sequences: A099828 A099829 A099830 * A099832 A099833 A099834

Keyword

nonn

Author

Hugo Pfoertner, Oct 27 2004

Status

approved