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.
[621, -250, -548, -952, -56, 198, 510, -661, 544, -976, 826, 903, 233, 571, -2, 951, -340, -198, -667, 704, -720, -680, -986]