
# Loops

'''
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())
    i = 0
    for i in range (0,n):
        print(i*i);
