[1,1,2,3,2,4,3,5,6,4,7,8,5,9,6,10,11,7,12,8,13,14, 9,15,16,10,17,11,18,19,12,20,21,13,22,14,23,24,15, 25,16,26,27,17,28,29,18,30,19,31,32,20,33,21,34, 35,22,36,37,23,38,24,39,40,25,41]