#include <stdio.h>

int main(void)
{
  int i, n, odd, square;

  printf("This program prints squares using an odd method.\n");
  printf("Enter number of entries in table: ");
  scanf("%d", &n);

  i = 1;
  odd = 3;
  /* Notice we initialize one variable (square), test another variable (i),
  	but increment a third variable (odd), where "i" is the number 
  	to be squared, "square" is the squre of i, and "odd" is the odd number
  	that must be added to the current square to get the next square.
  	This allows the program to compute consecutive squares without 
  	performing any multiplications. However, do not misuse flexibility 
  	provided by for-loop. 						*/
  	
  for (square = 1; i <= n; odd = odd + 2)  {
	printf("%10d%10d\n", i, square);
	i++;
	square = square + odd;
  }

  return 0;
}