Lucky 15 = 15 bets- 4 singles 6 doubles 4 Trebles and one accumulator. Double the winning odds if you just get 1 winner. and 10% extra for all 4*
Lucky 31 = 31 bets- 5 singles 10 doubles 10 trebles 5 fourfolds one accumulator. Double the winning odds if you just get 1 winner and 20% extra for all 5*
Lucky 63 = 63 bets- 6 singles 15 doubles 20 trebles 15 fourfolds 6 fivefolds one accumulator. Double the winning odds if you just get 1 winner and 100% extra for all 6*
*The bonus's vary depending on which bookie you use.