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.
[-712, -810, 314, 800, -193, -291, 428, -321, -236, 587, -839, -636, 663, -473, -121, 355, 514, 619, 236]