MatrixOfNumbers

using System;

//Write a program that reads from the console a positive integer number n (1 ≤ n ≤ 20) and prints a matrix
//like in the examples below. Use two nested loops. Examples:

//  n   matrix      n       matrix      n   matrix
//  2   1 2             3   1 2 3           4   1 2 3 4
//      2 3             2 3 4               2 3 4 5
//                          3 4 5               3 4 5 6
//                                                  4 5 6 7

    class MatrixOfNumbers
    {
        static void Main()
        {
            int n = int.Parse(Console.ReadLine());

            for (int row = 0; row < n; row++)
            {
                for (int col = 1; col <= n; col++)
                {
                    Console.Write("{0,-3}",col+row);
                }
                Console.WriteLine();
            }
        }
    }
}