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.
[355, 168, 650, 22, 226, 214, 453, -33, -149, -421, -821, -803, -913, -956, -451, 864, 158, 426, 423]