[1,1,1,2,2,3,4,4,6,6,7,8,8,10,10,11,12,12,14,14, 15,16,16,18,18,19,20,20,22,22,23,24,24,26,26,27, 28,28,30,30,31,32,32,34,34,35,36,36,38,38,39]