Looking advice on combination entry football win draw formula

[Izzernutter]

Hi all,

Hopefully this makes sense, i currently bet on football using a combination of win or draw. So if i bet 5 teams to win and draw there are 32 combination bets for example my first 5 may be draw draw draw draw draw then win draw draw draw draw and so on is there any formula i could put together to calculate the different combination as sometime i might just bet.on 4 teams which would be 16 bets.

Thanks

Iain