Paroli system
Paroli system is exactly the opposite of the Martingale: The sum increases with each winning bet and any loss from the initial position. Increasing the proportion of bets: 1, 2, 4, 16, 32 ... while this system is an important advance to determine which step you play before you start again.
1-3-2-6 system is similar to the system Paroli but instead to progressively increase the stakes (x2) follow the steps 1-3-2-6, and if you lose you go back to the beginning (1). The system is a complete cycle in which after step 6 is back again to 1.