Definition: 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.
Input: [680, -30, 555, 682, 420, 579, 921, 671, 158, 346, -240, 454, -968, -954, 103, 224, 637, -694, -112, -671, 354]

[555, 454]