TPO wrote: > unfortunatly, you don't have that old number system quite right. > > > 1 > 2 > 3 > 11 > 12 > 13 > 21 > 22 > 23 > etc. No, the original post was right. To count in base three, it's 0, 1, 2, 10, 11, 12, 20, 21, 22, 100, 101, etc.