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.
[646, 432, 764, 463, -475, -704, 163, 971, 91, -793, 483, 439, 178, -986, 137, 581, 832, -486, 34, -430, 604, 149]