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