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, 520, 102, -142, 945, 759, -325, 792, -428, 632, -266, -850, -164, 507, -830, 238, -819, -535, 921, 483]