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