Well, maybe. Consider this...
Start with a typical line: 1,1,1,1,1,1,1
The bet is first 'two' numbers plus the last (instead of the usual first and last). ie 1+1+1=3
Cross off 'three' numbers on a win instead of two numbers.
If a loss, then add the 3, so: 1,1,1,1,1,1,3
Next bet 1+1+3=5
Anybody see potential in this?