using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace NumberTable

{

    class NumberTable

    {

        static void Main(string[] args)

        {

            var n = int.Parse(Console.ReadLine());

            var count = 0;

            for (int row = 0; row < n; row++)

            {

                for (int column = 0; column < n; column++)

                {

                    count = row + column + 1;

                    if (count < n)

                    {

                        Console.Write(count + " ");

                    }

                    else

                    {

                        count = (2 * n) - column - row - 1;

                        Console.Write(count + " ");

                    }

​

                    //else if (count == n)

                    //{

                    //    Console.WriteLine(count);

                    //}

                }

                Console.WriteLine();

            }

        }

    }

}