[0,0,1,1,2,0,3,2,2,0,3,2,4,0,3,4,6,0,5,2,4,0,7,4, 6,0,6,4,7,0,8,6,7,0,6,6,9,0,8,6,12,0,13,8,9,0,12, 8,11,0,9,8,13,0,9,6,12,0,15,8,16,0,12,10,12,0,17, 12,13,0,18,10,20,0,14,12,15,0,21]