1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 10, 10, 12, 12, 11, 13, 12, 14, 13, 14, 14, 15, 16, 17, 18, 18, 20, 20, 19, 21, 20, 24, 22, 24, 21, 22, 25, 24, 22, 26, 25, 23, 28, 26, 25, 26, 24, 28, 28, 27, 25, 26, 29, 26, 30, 28, 28, 27, 29, 28, 30, 29, 30, 30, 31, 32, 33, 34