using System;

public class Hello
{
    public static void Main()
    {
        var n = int.Parse(Console.ReadLine().Trim());
        var map = new string[n, n];
        putMap(map, n);
        print(map, n);
    }
    public static void print(string[,] map, int n)
    {
        var ans = new string[n];
        for (int i = 0; i < n; i++)
        {
            for (int j = 0; j < n; j++)
                ans[j] = map[i, j];
            Console.WriteLine(string.Join(" ", ans));
        }
    }
    public static void putMap(string[,] map, int n)
    {
        int[] dx = { 0, 1, 0, -1 };
        int[] dy = { 1, 0, -1, 0 };
        var used = new bool[n, n];
        var x = 0; var y = 0; var dir = 0;
        var p = 1;
        var cango = true;
        while (cango)
        {
            used[x, y] = true;
            map[x, y] = string.Format("{0:000}", p++);
            cango = false;
            for (int i = 0; i < 4; i++)
            {
                var te = dir + i;
                if (te >= 4) te -= 4;
                var nx = x + dx[te];
                var ny = y + dy[te];
                if (nx >= 0 && nx < n && ny >= 0 && ny < n && !used[nx, ny])
                { x = nx; y = ny; dir = te; cango = true; break; }
            }
        }
    }
}