C#_TheMagicWard.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace TheMagicWard
{
    class TheMagicWard
    {
        static void Main()
        {
            int n = int.Parse(Console.ReadLine());
            int width = 3 * n + 2;
            Console.Write(new string('.', width / 2));
            Console.Write(new string('*', 1));
            Console.WriteLine(new string('.', width / 2));
            int iterations = n / 2 + 1;
            for (var i = 1; i <= iterations; i++)
            {
                Console.WriteLine("{0}*{1}*{0}",
                    new string('.', (width / 2) - i),
                    new string('.', (2 * i) - 1));
            }
            Console.WriteLine("{0}{1}{0}",
                new string('*', n),
                new string('.', width - 2 * n));

            for (var i = 1; i <= n / 2; i++)
            {
                Console.WriteLine("{0}*{1}*{0}",
                    new string('.', i),
                    new string('.', width - (2 * (i) + 2)));
            }
            for (var i = 1; i <= n / 2; i++)
            {
                Console.WriteLine("{0}*{1}*{2}*{3}*{2}*{1}*{0}",
                    new string('.', n / 2 - i),
                    new string('.', n / 2),
                    new string('.', i - 1),
                    new string('.', n));
            }
            Console.WriteLine("{0}{1}*{2}*{1}{0}",
                new string('*', n / 2 + 1),
                new string('.', n / 2),
                new string('.', n));
            for (var i = 1; i <= n; i++)
            {
                Console.WriteLine("{0}*{0}*{0}",
                    new string('.', n));
            }
            Console.WriteLine("{0}{1}{0}",
                new string('.', n),
                new string('*', width - 2 * n));
        }
    }
}