1, 1, 2, 2, 3, 2, 4, 3, 5, 2, 5, 4, 6, 3, 7, 5, 8, 2, 7, 5, 7, 4, 9, 6, 10, 3, 9, 7, 10, 5, 12, 8, 13, 2, 10, 7, 9, 5, 12, 7, 12, 4, 11, 9, 13, 6, 15, 10, 16, 3, 13, 9, 12, 7, 16, 10, 17, 5, 15, 12, 17, 8, 20, 13, 21, 2, 15, 10, 12, 7, 17, 9, 16, 5, 14, 12