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

namespace PascalsTriangle
{
    class Program
    {
        static void Main(string[] args)
        { 
            int n=5;
            //Console.Write("Enter the number of rows: ");
            //n = Convert.ToInt32(Console.ReadLine());  
            for (int y = 0; y < n; y++)
            {
                int c = 1;
                Console.WriteLine("\t");  
                int centeringNum = (n - y);
                    if (y % 2 != 0)
                    {
                        centeringNum++;
                    }
                    else
                    {
                        Console.Write(" ");
                    }            
                for (int j = 0; j < (centeringNum); j++)
                {
                    Console.Write(" ");
                }
                for (int x = 0; x <= y; x++)
                {
                    Console.Write(c + " ");
                    c = c * (y - x) / (x + 1);
                }
                Console.Write(" ");             
            }
            Console.ReadLine();
        }
    }
}