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.
[421, 876, 660, 250, 413, -726, -79, 703, -643, 501, 989, -939, -127, -534, 621]