Probability

Vasant and Jothi play a game with a coin. Vasant stakes ₹ 1 and throw the coins four times.
If he throws four heads, he gets his stake and ₹3 from Jothi.
If he throws only three heads and they are consecutive, he gets his stake and ₹2 from Jothi.
If he throws only two heads and they are consecutive, he gets his stake and ₹1 from Jothi.
In all other cases Jothi takes the stake money.
Find the expectation of Vasant's gain.