text: '''
  Task
  The provided code stub reads and integer, n ,from STDIN. For all non-negative integers i<n, print i².
  
  Example
  n=3
  
  The list of non-negative integers that are less than n=3 is [0,1,2]. Print the square of each number on a separate line.
  
  0
  1
  4
  
  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
  
  Sample Input 0
  
  5
  
  Sample Output 0
  
  0
  1
  4
  9
  16.
  
  '''
  
  if __name__ == '__main__':
      n = int(input())
      for i in range(0,n):
          print(pow(i,2))
  