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.
[991, 322, -784, 380, 672, 239, 614, 407, 814, 715, -308, 805, 984, 889, 377, 300, 606, -540]