Given the task definition and input, reply with output. 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.

[317, 887, -672, 540, 796, -29, -513, -17, -102, -244, 739, -283, 999, -221, -199, 166, 192, -988, 341, 807]

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
[999]