[1,3,2,6,5,4,9,10,8,7,13,15,14,12,11,18,21,20,19, 17,16,24,27,28,26,25,23,22,31,34,36,35,33,32,30, 29,39,42,45,44,43,41,40,38,37,48,51,55,54,53,52, 50,49,47,46,58,61,65,66,64,63,62,60,59,57,56,69, 72,76]