[0,1,2,3,4,5,6,7,8,9,11,10,13,12,15,14,17,16,20, 18,22,19,24,21,26,23,29,25,31,27,33,28,35,30,38, 32,40,34,42,36,44,37,47,39,49,41,51,43,53,45,56, 46,58,48,60,50,62,52,65,54,67,55,69,57,71,59,74, 61,76,63,78,64,80]