[0,1,1,2,2,3,2,4,3,3,3,4,3,5,4,5,5,6,4,7,5,7,5,8, 6,6,6,9,6,10,6,11,7,11,7,12,10,13,8,13,8,14,8,15, 9,14,9,15,9,10,10,16,10,17,10,17,10,18,11,19,10, 20,12,19,19,21,12,22,13,22,13,23,11,24,14,23,14, 25,14,26,14,15,15]