"""
Task 
	Read an integer N. For all non-negative integers i < N, print i^2. See the sample for details.

Input Format
	The first and only line contains the integer, N.

Constraints
	1 <= N <= 20

Output Format
	Print N lines, one corresponding to each i.
"""
if __name__ == '__main__':
    n = int(input())
    for i in range(0, n):
    	print(i ** 2)