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.
[21, -903, 786, -230, 250, -989, -750, 111, 897, 459, 150, -166, 308, -20, -848, 38, -975, -390, -873, 240, 126, 602, 686, 6]