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: [900, -515, 477, 488, -57, 396, 968, 949, 821, 227, 666, -641, 41, 140, 743, -872, 721]

[-515, 949, 666]