Hi Terminator, glad you like the progression. It's actually a sort of "universal" progression in that it can be used for other bets, not just 2-1. According to Holloway in his book, "Full Time Gambler", there are two ways to use it:
1. The "rise and fall" way. This is as I described it earlier, but you can also use it with odds other than 2-1. After a win you move back as many places as the odds to 1. e.g. if using it with a double street (5-1), after a win you would move back 5 steps. When you get back to step one you will be in profit.
2. The "no retreat" way. In this case you continue to move up the progression until you have a new high (regardless of whether the prior result was a win or loss), then reset to one.
I didn't post the full progression, which is actually this:
It's based on a fixed percentage scale, so successive steps are generated by multiplying the current value by a fixed % and then rounding (the above uses about 10%). So you could generate your own progressions using different percentages. e.g. if using 20% you proceed like this:
next step is 1.2 x 1 = 1.2 (1, rounded)
next step is 1.2 x 1.2 = 1.44 (1, rounded)
next step is 1.2 x 1.44 = 1.728 (2, rounded)
next step is 1.2 x 1.728 = 2.074 (2, rounded)
and so on. Get the idea?