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.
[-340, -606, -116, 571, 838, -685, 343, -521, 661, -487, 291, -444, -521, -387, -48, 188, -712, 114, 990, 550, 991, -951]