/* -*- coding: utf-8 -*-
 *
 * 727.cc:  No.727 仲介人moko - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

const int MOD = 1000000007;

/* typedef */

typedef long long ll;

/* global variables */

/* subroutines */

/* main */

int main() {
  int n;
  scanf("%d", &n);

  int n2 = n * 2;
  ll ofrc = 1, frc = 1;

  for (int i = 3; i < n2; i += 2) ofrc = ofrc * i % MOD;
  for (int i = 2; i <= n; i++) frc = frc * i % MOD;

  printf("%lld\n", ofrc * frc % MOD * frc % MOD);
  return 0;
}