[3,2,1,5,7,4,6,9,15,8,11,10,12,14,13,17,21,16,19, 18,20,23,27,22,24,26,25,29,31,28,30,33,37,32,35, 34,36,39,43,38,40,42,41,45,51,44,47,46,48,50,49, 53,55,52,54,57,63,56,59,58,60,62,61,65,69,64,67, 66,68,71,75,70]