using System;
using System.Collections.Generic;
using System.Linq;

public class Test
{
	public static void Main()
	{
		var n = int.Parse(Console.ReadLine());
		
		var array = new int[n,n];
		
		int x = 0;
		int y = -1;
		int z = 0;
		int i = 1;

		while(i <= n * n)
		{
			switch (z % 4)
			{
				case 0:
					if(y == n - 1  || array[x, y + 1] != 0) z++;
					break;
				case 1:
					if(x == n - 1 || array[x + 1, y] != 0) z++;
					break;
				case 2:
					if(y == 0 || array[x, y - 1] != 0) z++;
					break;
				case 3:
					if(x == 0 || array[x - 1, y] != 0) z++;
					break;
			}

			switch (z % 4)
			{
				case 0:
					y++;
					break;
				case 1:
					x++;
					break;
				case 2:
					y--;
					break;
				case 3:
					x--;
					break;
			}
			
			array[x,y] = i;
			i++;
		}
		
		for(int j = 0; j < n; j++)
		{
			for(int k = 0; k < n; k++)
			{
				Console.Write("{0:000}", array[j,k]);
				if (k < n - 1) Console.Write(' ');
			}
			Console.WriteLine();
		}
	}
}