A096897 Least semiperimeter of primitive Pythagorean triangles with even leg 4n.
6, 20, 15, 72, 35, 28, 63, 272, 99, 45, 143, 88, 195, 77, 66, 1056, 323, 117, 399, 104, 91, 165, 575, 304, 675, 221, 783, 120, 899, 204, 1023, 4160, 187, 357, 170, 153, 1443, 437, 247, 336, 1763, 228, 1935, 209, 190, 621, 2303, 1120, 2499, 725, 391, 273, 2915
Offset: 1