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