[0,1,1,1,3,2,4,3,4,4,5,4,6,5,6,6,7,6,8,7,8,8,9,8, 9,9,9,9,10,9,11,10,11,11,11,11,12,11,12,12,13,12, 14,13,14,14,15,14,15,15,15,15,16,15,16,16,16,16, 17,16,18,17,18,18,18,18,19,18,19,19,20,19,21,20, 21,21,21,21,22]