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.
[643, 653, 323, -378, 131, -663, 43, 56, -650, -51, -643, -686, 660, 502, 371]