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.
[-729, 393, -602, -511, -133, 668, 919, 508, -803, -498, -189, 509, -405, 138, 974, 771, 601, 931]