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.
[-502, 615, 31, -391, -210, -654, 265, -926, 165, 391, -100, 714, 248, -390, -173, 999, 475, 464, -733, 612, 400]