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.
[-593, 616, 558, -548, -106, 939, -128, -608, 509, -893, 476, -812, 190, 515, -18, -812, 356, 412]