Steady as she goes even chances

Here's our progression line 1-2-3-5-7-9-12-15-18-22-26-30-35-40-45-50.  Each level is a flat bet for the number of bets per attack we decide on.  Let's say we're playing 4 bets per attack.  That means the most times we will bet in each attack is 4 time...

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