Definition: 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.
Input: [504, 800, -652, -9, 399, 138, 395, -929, 213, 650, -9, -845, -508, -624, 810, 856, 173, -742, 191, 247, 47, -823]

[-9, -929, -9, 191]