User blog comment:JTOnstead20/Jonathan's Greek Notation/@comment-24676271-20161017170342

Ok thanks.

Just to clarify (I posted this on the website as well):

3->3->3 is Conway's Tetratri. This computes to 3A1, 3 meaning 3,3 in the notation, which computes to 3 chains of 3 in Chained arrow notation. Single A means that there it is the first level and 1 means there is 1 tower.

3A5 means this: 3->3->...->3->3 where ... is 3A4. 3A4 is 3->3->...->3->3 where ... is 3A3 and so on until you get to the base, which is Conway's Tetratri.