Loops - Catalan Numbers

using System;

    class CatalanNumbers
    {
        static void Main(string[] args)
        {
            bool successParse;
            int enteredNumber;
            int catalanNumber;
            decimal factoriel2N =1;
            decimal factorielNPlus1=1;
            do
            {
                Console.Write("Enter the last element: ");
                successParse = int.TryParse(Console.ReadLine(), out enteredNumber);
            } while (!successParse);


            for (int i = enteredNumber+1; i <= 2*enteredNumber; i++)
            {
                factoriel2N *= i;

            }

            for (int i = 1; i <= enteredNumber+1; i++)
            {
                factorielNPlus1 *= i;
            }

            Console.WriteLine("The {0} element is: {1}", enteredNumber, factoriel2N/factorielNPlus1);
        }
    }