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.
[21, 259, -317, -389, -465, 706, 293, 212, 467, 541, -470, 640, 431, 200, -683, -850, -758, 735, -846, -695, 59, -52, -621]