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.
[-342, -541, -822, 856, -505, 137, 303, 678, -222, -233, -76, -850, -454, -403, 659, -956, 749, 840]