Write a program that reads from the console a positive integer number N (N < 20) and prints a matrix of numbers as on the figures below:

Write a program that reads from the console a positive integer number
N (N < 20) and prints a matrix of numbers as on the figures below:

N = 3 
1 2 3
2 3 4
3 4 5

N = 4
1 2 3 4
2 3 4 5
3 4 5 6
4 5 6 7


using System;

namespace ConsoleApplication8
{

    class Program
    {

        static void Main()
        {

            for (int i = 1; i <= 3; i++)
            {
                for (int j = 0; j <=2; j++)
                {
                    Console.Write(i+j);
                }
                Console.WriteLine();
            }
            Console.ReadLine();
        }
    }
}