A081872 Long legs of primitive Pythagorean triangles sorted on semiperimeter.

4, 12, 15, 24, 21, 35, 40, 45, 60, 63, 56, 55, 84, 77, 80, 99, 72, 112, 91, 117, 144, 143, 105, 140, 132, 180, 165, 120, 176, 195, 153, 168, 220, 187, 156, 221, 171, 255, 208, 264, 209, 260, 247, 252, 285, 312, 231, 323, 240, 308, 273, 224, 364, 253, 357, 288