Using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication6
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = 5;

            int[,] mass = new int[n, n];
            for (int i = 0; i < n; i++)
            {
                for (int j = 0; j < n; j++)
                {
                    mass[i, j] = (j + 1) * (i + 1);
                }
            }
            Console.ReadKey();
        }
    }
}