[1,2,5,4,9,6,13,8,17,10,21,12,25,14,29,16,33,18, 37,20,41,22,45,24,49,26,53,28,57,30,61,32,65,34, 69,36,73,38,77,40,81,42,85,44,89,46,93,48,97,50, 101,52,105,54,109,56,113,58,117,60,121,62,125,64, 129,66,133,68,137]