[1,1,2,1,3,2,4,1,4,3,5,2,6,4,6,1,5,4,8,3,8,5,9,2, 9,6,8,4,10,6,8,1,10,5,12,4,12,8,12,3,8,8,10,5,12, 9,15,2,16,9,10,6,16,8,15,4,16,10,9,6,18,8,16,1,18, 10,9,5,18,12,20,4,15,12,18,8,20,12]