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