[0,1,1,3,2,3,5,7,4,6,9,7,10,11,13,15,8,12,17,14, 18,19,21,15,20,22,25,23,26,27,29,31,16,24,33,28, 34,35,37,30,36,38,41,39,42,43,45,31,40,44,49,46, 50,51,53,47,52,54,57,55,58,59,61,63,32,48,65,56, 66,67,69]