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Typical roulette players usually go for one of the two classic roulette games: European Roulette and American Roulette. The difference between these two is that the European version only has one single green zero (37 pockets in total), while the American version has two (38 pockets in total). French Roulette also has one zero slot, and therefore more favorable odds. A downtown Vegas hustler/compulsive gambler I knew named Black Bart used a type of Martingale at the craps table at the Plaza. This was early nineties and the minimum bet was 25 cents. He new spins no deposit would bet one 25 cent chip at a time on the don't pass. No free odds. After a loss he would double up and add one. So his progression looked like this:1-3-7-15-31-63, etc.Is there a name for this betting progression? Does anyone know?