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.
[336, -583, 996, -847, 770, -629, -238, 385, -531, -199, -807, 280, -292, 922, 686, -581, -627, 876, 494, -428]