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.
[-716, 643, -829, -255, -931, -764, -13, 285, 529, -241, -99, 513, 639, -533, -783, 420]