Okay... I managed to pull this off... HOWEVER, it's not going to do "1, 2, 3, 4, 5, 6, 1, 2...." without the final number popping up (if you stop at "1", it'll do "1", if you stop at "4" it will display "4" as the last piece of the sequence. I'm sure there are ways to "alter" this. But, here's what I did (and it was super easy):
Button (advanced) [Turbo .10S]: "1, Stop, 2, Stop, 3, Stop, 4, Stop, 5, Stop, 6, Stop"
That's all there was too it.
I should point out... it resumes where you left off, too. If I get "1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 1, 2, 3" and stop, and press it again, I get "4, 5, 6...".
You can likely tweak it up a lot better than this (it was a three second test, because I'm busy in reality right now).