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.
[229, 364, -754, -874, 138, -905, 751, -54, -63, -721, 337, 56, -312, -42, 687, -248, 836, -497, -540, 898, 144, -997, 923, 570]