Object mutation

class Permutations
{
    static void Main()
    {
        Console.WriteLine("Enter value for N: ");
        int n = int.Parse(Console.ReadLine());

        Recursion rec = new Recursion();

        rec.InputSet = rec.MakeArray(n);
        rec.CalcPermutation(0);

        rec.InputSet = rec.MakeArray(n + 1);
        rec.CalcPermutation(0);


        Console.WriteLine("# of Permutations: " + rec.PermutationCount);
    }
}