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