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.
[-919, -97, 601, 590, 840, 918, -664, 881, 999, 636, -42, 269, 687, -664, -508, 644, 523, 995, -645, -367, -121, 917, 620]