Fibonacci
Progression that follows the sequence 1, 1, 2, 3, 5, 8, 13…: one step forward after a loss, two steps back after a win.
In context
Gentler than MartingalestrategyMartingaleProgression that doubles the bet after each loss. See the Strategy section for what it does and does not do.Read full →, slower to recover, and bounded by the same table limittableTable limitMinimum and maximum bet allowed. The maximum is what stops doubling progressions.Read full →; expected lossmathExpected lossExpected value times total amount wagered; the average amount lost over a session or a period.Read full → 2.70% of turnovermoneyTurnoverThe total amount wagered over a session or period, counting re-bet winnings. Also: handle, action.Read full →.
Leonardo of Pisa described the sequence in 1202 as a model of breeding rabbits. It arrived at the roulette table around 700 years later via a betting system nobody has traced to an author.