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.
[451, -606, 707, 117, 806, 122, -392, 271, 923, 220, -84, -463, 420, -393, 557, -458, -105]