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: [-252, 262, 89, 758, -495, -646, -423, 731, -805, -975, 547, -221, 54, -14, 32, 307, -239, -305, -635, -691, 518, -816]

[-252, 262, -646]