[1,3,3,4,4,5,5,7,7,7,8,8,8,9,9,11,11,11,11,12,12, 12,13,13,13,15,16,16,16,17,17,17,19,19,19,20,20, 20,21,21,23,23,24,24,28,28,28,28,28,28,29,31,32, 32,33,35,36,36,37,39,40,41,43,44,44,44,48,51]