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.
[-447, 750, 456, -18, 6, -234, 421, -448, -813, 546, 807, -585, 701, 660, 525, -180, 620, 462, 937, -423, 462, 437, -46, 499]