[0,1,2,2,3,4,4,5,6,7,8,8,9,10,10,11,12,13,14,14, 15,16,16,17,18,18,19,20,20,21,22,23,24,24,25,26, 26,27,28,29,30,30,31,32,32,33,34,34,35,36,36,37, 38,39,40,40,41,42,42,43,44,45,46,46,47,48,48,49, 50,51,52,52,53,54,54,55,56,57,58,58]