[0,0,1,2,3,3,4,5,6,6,7,8,9,9,10,11,12,12,13,14,15, 15,16,17,18,18,19,20,21,21,22,23,24,24,25,26,27, 27,28,29,30,30,31,32,33,33,34,35,36,36,37,38,39, 39,40,41,42,42,43,44,45,45,46,47,48,48,49,50,51, 51,52,53,54]