#include <algorithm>
#include <cassert>
#include <cctype>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <ctime>
#include <deque>
#include <functional>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <string>
#include <utility>
#include <vector>

#define REP(i,s,n) for(int i=(int)(s);i<(int)(n);i++)

using namespace std;
typedef long long int ll;
typedef vector<int> VI;
typedef vector<ll> VL;
typedef pair<int, int> PI;
const ll mod = 1e9 + 7;

ll powmod(ll a, ll e) {
  ll sum = 1;
  ll cur = a;
  while (e > 0) {
    if (e % 2) {
      sum = sum * cur % mod;
    }
    cur = cur * cur % mod;
    e /= 2;
  }
  return sum;
}

const int N = 123456;
ll fact[N];

void init(void) {
  fact[0] = 1;
  REP(i, 1, N) {
    fact[i] = fact[i - 1] * i % mod;
  }
}

int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(0);
  init();
  int n;
  cin >> n;
  ll tot = 0;
  REP(i, 0, n + 1) {
    ll cur = fact[n];
    cur = cur * powmod(fact[i] * fact[n - i] % mod, mod - 2);
    cur = cur * powmod(i, n - i) % mod;
    tot = (tot + cur) % mod;
  }
  cout << tot << "\n";
}