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.
[867, 968, -951, -570, -544, -338, -549, 461, 54, 198, 67, -329, -288, -356, 721, 919, -644, 437, 337, -511, -340, 835]