[1,2,1,3,2,2,4,3,4,3,5,4,6,6,4,6,5,8,9,8,5,7,6,10, 12,12,10,6,8,7,12,15,16,15,12,7,9,8,14,18,20,20, 18,14,8,10,9,16,21,24,25,24,21,16,9,11,10,18,24, 28,30,30,28,24,18,10]