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.
[23, -165, 853, 861, 725, 544, 840, -220, -481, -724, 10, -929, 507, -59, -721]