[1,2,2,4,4,6,6,6,9,9,9,12,12,12,15,15,15,18,18,18, 21,21,21,24,24,24,24,28,28,28,28,32,32,32,32,36, 36,36,36,40,40,40,40,44,44,44,44,48,48,48,48,52, 52,52,52,56,56,56,56,60,60,60,60,64,64,64,64,68]