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.
[-398, 541, 842, -535, -749, -431, -824, -636, 629, 978, 257, -437, 105, -823, -729, -447, 797, -754, 123, 718, -904]