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.
[-166, 552, 4, -84, -87, -193, 885, 329, 361, 2, -984, 684, -61, -236, 161, 252, -421]