A070784 Square of second longest side of triangles with sides whose squares are integers and with positive integer area, ordered by longest side, then second longest side and finally shortest side.

2, 4, 5, 4, 5, 8, 4, 8, 10, 10, 6, 5, 8, 9, 12, 15, 5, 8, 10, 13, 13, 5, 8, 13, 16, 17, 10, 16, 8, 9, 10, 10, 13, 13, 16, 17, 17, 17, 18, 20, 20, 12, 15, 8, 13, 13, 16, 17, 17, 20, 20, 25, 10, 10, 16, 18, 20, 20, 20, 26, 24, 14, 9, 13, 16, 20, 20, 20, 25, 25, 29, 12, 24, 30, 30, 10