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: [47, -850, 550, 478, 893, -172, 920, 404, -699, -636, -480, -818, 878, 710, 670, -60, -817, -439]

[404, -636, -818, 878]