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