Definition: 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.
Input: [268, 432, -728, 588, -548, -578, -493, -462, 488, 646, 902, 770, -590, -519, -943, 144, 161, 771, -21]

[646, 161]