A081873 Ordered semiperimeter of primitive Pythagorean triangles with an odd short leg (or an even long leg).

6, 15, 28, 45, 66, 77, 91, 104, 117, 120, 153, 170, 187, 190, 204, 209, 228, 231, 247, 273, 276, 299, 322, 325, 345, 350, 368, 378, 400, 425, 432, 435, 459, 464, 493, 496, 513, 522, 527, 551, 558, 561, 580, 589, 620, 627, 630, 651, 660, 665, 703, 740, 759