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: [4, 621, -734, 857, -399, -304, 666, 867, 264, 600, -30, -56, 690, 678, -792, -12, 814, 883, -228, -796, -194]

[4, 666]