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