1, 3, 4, 4, 5, 5, 7, 7, 8, 8, 9, 11, 11, 12, 12, 13, 13, 15, 15, 16, 16, 17, 17, 19, 19, 20, 20, 20, 20, 21, 21, 23, 23, 24, 24, 25, 28, 28, 28, 28, 29, 31, 32, 32, 33, 35, 35, 35, 36, 37, 39, 40, 40, 40, 44, 44, 44, 45, 48, 51, 52, 52, 52, 55, 55, 56, 56