expected value of random uniformly variable in matlab

I actually don't really know if this post belongs to this community but I think it is about failure in my code rather than my calculations.(If it doesn't belong here I will move this post to another community)

I got assignment in my Probability course to demonstrate the expected value of the following random variable .

I need to write a code in matlab that getting N random real between [0,1] and calculating the following value for each and show why the sequence of values converges to the the value

I wrote the following code in matlab:

but the value of E(i) converges to 0.46 instead of the real expected value.

What have I done wrong in my code?

Thank you, Michael