Write a function to find the n'th star number.
def find_star_num(n): 
	return (6 * n * (n - 1) + 1) 
<s>[INST]<<SYS>>Given a task and its code, generate test cases for the code.<</SYS>>Write a function to find the n'th star number.
def find_star_num(n): 
	return (6 * n * (n - 1) + 1) [/INST]assert find_star_num(3) == 37
assert find_star_num(4) == 73
assert find_star_num(5) == 121</s>