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: [555, -608, 893, -718, 324, 989, 220, 968, 510, -136, -593, 993, -644, 720, 346, 23, -612, 333, -131, 310]

[555, 989, 333, -131]