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.
[-490, 602, -104, -519, 474, 268, 694, -326, -643, 328, 906, 993, -708, -813, -516, -665, 191, 534, -25, 699, -340, -839]