The La Partage rule

A bet on one number only, called a straight up bet, pays 35 to 1. You collect 36. With no House advantage you should collect 37 38 in the USA on double zero roulette wheels.
A two number bet, called split bet, pays 17 to 1.
A three number bet, called street bet, pays 11 to 1.
A four number bet, called corner bet, pays 8 to 1.
A six number bet, pays 5 to 1.
A bet on the outside dozen or column, pays 2 to 1.
A bet on the outside even money bets, pays 1 to 1.