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.
[506, 478, -458, 543, 477, 614, -450, -711, -422, 172, -130, -775, -201, -11, 97, -1, 727, 844, -217, -623, -931]