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: [-774, -50, 514, 227, 15, 687, 606, -83, -508, -90, 503, -321, 592, 246, 606, -33, -929, 479, 724, 592, 521]

[606, 606, -33, -929]