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.
[-117, 638, -833, -418, 4, 804, 841, -435, -855, 1000, 62, 579, 877, 21, -503, 699, 535, -529, 450, 465, 637]