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.
[156, -999, 782, 899, -494, -140, -661, 721, 297, 203, -309, -49, 320, 796, -789, 164, -796, 620]