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.
[-121, 624, 762, 207, -420, 6, -539, 388, -513, -782, 400, 389, -800, -707, 426, 331, 171, -309, 439, -320, 891]