#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <string>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <stdio.h>
using namespace std;
#define int long long
int MOD = 1000000007;
signed main() {
	cin.tie(0);
	ios::sync_with_stdio(false);
	int N;
	cin >> N;
	int res = 1;
	int res2 = 1;
	for (int i = 1; i <= 2 * N - 1; i += 2) {
		res = (res*i) % MOD;
	}
	for (int i = 1; i <= N; i++) {
		res2 = (res2*i) % MOD;
	}
	res = (res*res2) % MOD;
	res = (res*res2) % MOD;
	cout << res << endl;
}