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