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