Matrix

using System;
/* Write a program that reads from the console
 * a positive integer number N (N < 20) and outputs a matrix
 */
class Matrix
{
    static void Main()
    {
        Console.WriteLine("Enter how big matrix want: ");
        int n = int.Parse(Console.ReadLine());
        int count = 1;

        for (int i = 1; i <= n ; i++)
        {
                for (int j = count; j < n + count; j++)
            {
                Console.Write("{0,3}",j);

            }
                Console.WriteLine();
                count++;
        }
    }
}