Write a function to find the n’th carol number.
def get_carol(n): 
	result = (2**n) - 1
	return result * result - 2
<s>[INST]<<SYS>>Given a task and its code, generate test cases for the code.<</SYS>>Write a function to find the n’th carol number.
def get_carol(n): 
	result = (2**n) - 1
	return result * result - 2[/INST]assert get_carol(2) == 7
assert get_carol(4) == 223
assert get_carol(5) == 959</s>