[0,1,1,3,4,4,3,5,6,7,7,8,7,8,5,11,9,10,8,13,8,12, 9,13,11,12,10,15,11,16,10,17,10,20,12,20,14,18,13, 21,13,22,13,20,14,25,14,22,18,22,15,26,12,29,17, 25,15,27,15,30,19,26,14,32,17,33,19,27,19,31,18, 34,19,29,19,37,16,33,21,30,24,39,20,38]