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.
[-742, -704, 646, -918, 770, 324, 856, 350, 871, -581, -897, 709, 767, 573, -92, -408, -236, 777, 878, 670, 270, -1, -492, 857]