[1,0,2,1,3,3,4,4,5,7,7,8,7,10,8,10,10,11,10,13,11,13,13,14,16,16,17,16,19,17,19,19,20,21,21,22,22,23,24,24,25,24,27,25,27,27,28,30,30,31,30,33,31,33,33,34,36,36,37,36,39,37,39,39,40,39,42,40,42,42,43,45,45,46,45,48]
