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.
[-289, -439, -643, 360, 920, 517, 138, 881, -426, 887, -939, 358, -162, 84, 577, -72, 40, -123]