[0,1,0,1,2,1,3,0,1,2,4,0,1,2,5,0,1,2,3,6,1,3,7,0, 1,2,4,8,0,1,2,4,9,0,1,2,5,10,0,1,2,3,5,11,0,1,2,3, 4,6,12,0,1,2,3,5,6,13,0,1,2,3,6,7,14,1,3,7,15,0,1, 2,4,8,16,0,1,2,4,8,17,0,1,2,4,9,18,0,1,2,3,4,9,19, 0,1,2,4,5,10]