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.
[322, 674, -977, -57, 433, 636, -834, -143, -631, -556, -638, -509, 512, 221, 264, -623, 87]