[1,1,2,1,3,2,1,4,3,5,2,1,4,6,3,5,7,2,8,1,4,6,3,9, 5,7,2,10,8,1,4,6,3,11,9,5,12,7,13,2,10,8,1,14,4,6, 3,11,9,5,15,12,7,13,16,2,10,8,1,14,17,4,6,3,11,9, 5,15,18,12,7,19,13,16,2,10,8,1,14,17,20,4,21,6,3, 11]