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: [273, 659, -128, 330, 555, -836, -526, -231, 612, -817, 835, -991, -949, 452, 727, 448, 287, 420, 998, -323]

[555, -949, 727, -323]