For starters, you should know that a MacLaurin series for a function f(x) looks like .
Now if we can recognise that is the closed form of the geometric series with , so that means
which is a MacLaurin Series. It can be seen that the coefficient of every even-powered term (except the constant term) is 1, so that means the coefficient of the 2012th term is 1. Remember that every coefficient in the MacLaurin Series is of the form , this means for the 2012th term we have