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.
[579, 451, -505, 520, 226, 710, -819, -414, -968, -20, -21, 413, 507, 985, 167]