A024355 Consider primitive Pythagorean triangles (A^2 + B^2 = C^2, (A, B) = 1, A <= B); sequence gives values of AUB, sorted.

3, 4, 5, 7, 8, 9, 11, 12, 12, 13, 15, 15, 16, 17, 19, 20, 20, 21, 21, 23, 24, 24, 25, 27, 28, 28, 29, 31, 32, 33, 33, 35, 35, 36, 36, 37, 39, 39, 40, 40, 41, 43, 44, 44, 45, 45, 47, 48, 48, 49, 51, 51, 52, 52, 53, 55, 55, 56, 56, 57, 57, 59, 60, 60, 60, 60, 61, 63