числата от 1 до 20, C#

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Microsoft (R) Visual C# Compiler version 2.9.0.63208 (958f2354)

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

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            Console.WriteLine(1);
            Console.WriteLine(2);
            Console.WriteLine(3);
            Console.WriteLine(4);
            Console.WriteLine(5);
            Console.WriteLine(6);
            Console.WriteLine(7);
            Console.WriteLine(8);
            Console.WriteLine(9);
            Console.WriteLine(10);
            Console.WriteLine(11);
            Console.WriteLine(12);
            Console.WriteLine(13);
            Console.WriteLine(14);
            Console.WriteLine(15);
            Console.WriteLine(16);
            Console.WriteLine(17);
            Console.WriteLine(18);
            Console.WriteLine(19);
            Console.WriteLine(20);
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,23 sec, absolute running time: 0,09 sec, cpu time: 0,12 sec, average memory usage: 13 Mb, average nr of threads: 3, absolute service time: 0,37 sec