Tribonacci Sequence

using System;

namespace MoreMethodExercises
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Enter the numbers you want to get from a tribonacci sequence: ");
            int num = int.Parse(Console.ReadLine());
            TribonacciSeq(num);
        }

        static void TribonacciSeq(int number)
        {
            int[] arr = new int[number];
            arr[0] = 1;
            arr[1] = 1;
            arr[2] = 2;
            if(number == 1)
            {
                Console.WriteLine("1");
            }
            else if(number == 2)
            {
                Console.WriteLine("1 1");
            }
            else if (number == 3)
            {
                Console.WriteLine("1 1 2");
            }
            else if(number > 3)
            {
                for (int k = 3; k < arr.Length; k++)
                {
                    arr[k] = arr[k - 3] + arr[k - 2] + arr[k - 1];
                }
                foreach (int m in arr)
                {
                    Console.Write(m + " ");
                }
            }
            else
            {
                Console.WriteLine("Incorrect input");
            }


        }

    }
}