In this task you will be given a list of integers. You should only return an integer if the first digit is the same as the last digit in the number. If an integer has a single digit, then it should be returned. If there are no integers that start and end with the same digit then an empty list ("[]") should be returned.
[-999, -928, 340, 612, -301, -511, -338, 876, 540, -39, 129, -677, 663, 41, -268, 663]