using System;
using System.IO;
using System.Linq;
using System.Collections.Generic;

public class Program
{

	public void Proc()
	{
		int num = int.Parse(Reader.ReadLine());
        long ans = GetAns(num, 0);
        Console.WriteLine(ans);
    }
    private long mod = 1000000000 + 7;
    private Dictionary<long, Dictionary<long, long>> dic = new Dictionary<long, Dictionary<long, long>>();

    private long GetAns(long green, long yellow) {
        if(green == 0 && yellow == 0) {
            return 1;
        }
        if(!dic.ContainsKey(green)) {
            dic.Add(green, new Dictionary<long, long>());
        }
        if(dic[green].ContainsKey(yellow)) {
            return dic[green][yellow];
        }

        long ans = 0;
        if(green == 0) {
            ans = 1;
            for(int i=2; i<=yellow; i++) {
                ans=ans*i;
            }
        } else {
            if(green > 0) {
                ans = GetAns(green - 1, yellow + 1) * green;
                ans = ans % mod;
            }
            if(yellow > 0) {
                ans += (GetAns(green, yellow - 1) * yellow);
                ans = ans % mod;
            }
        }
        dic[green][yellow] = ans;
        return ans;
    }

	public class Reader
	{
		private static StringReader sr;
		public static bool IsDebug = false;
		public static string ReadLine()
		{
			if (IsDebug)
			{
				if (sr == null)
				{
					sr = new StringReader(InputText.Trim());
				}
				return sr.ReadLine();
			}
			else
			{
				return Console.ReadLine();
			}
		}
		private static string InputText = @"

2


";
	}

	public static void Main(string[] args)
	{
#if DEBUG
		Reader.IsDebug = true;
#endif
		Program prg = new Program();
		prg.Proc();
	}
}