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.
[664, 726, -990, 396, -377, -718, 131, -764, 403, -677, 877, 874, 488, -451, 450]