#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <cmath>
#include <limits.h>
#include <map>
#include <unordered_map>
#include <set>
#include <queue>
#include <algorithm>
#include <functional>
#include <stdio.h>
using namespace std;

long long MOD = 1000000007;

int main() {

    long long N;
    cin >> N;

    long long ans = 1;
    for ( long long i = 0; i < N; i++ ) {
        long long a = N*2 - i*2;
        ans *= ( a * (a-1) / 2 )%MOD;
        ans %= MOD;
    }
    cout << ans << endl;

    return 0;
}