[2,1,4,3,7,5,9,6,12,8,15,10,17,11,20,13,22,14,25, 16,28,18,30,19,33,21,36,23,38,24,41,26,43,27,46, 29,49,31,51,32,54,34,56,35,59,37,62,39,64,40,67, 42,70,44,72,45,75,47,77,48,80,50,83]