#include <bits/stdc++.h>

using namespace std;

#define fst(t) std::get<0>(t)
#define snd(t) std::get<1>(t)
#define thd(t) std::get<2>(t)

using ll = long long;
using P = std::tuple<int,int>;

const int dx[8] = {-1, 1, 0, 0, -1, -1, 1, 1}, dy[8] = {0, 0, -1, 1, -1, 1, -1, 1};

int main(){
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    int N;
    std::cin >> N;

    int M = 2 * N;
    ll res = 1ll, MOD = 1e9 + 7;

    for(ll i=2;i<=M;i+=2){
        ll nCk = i * (i-1) / 2 % MOD;
        res = res * nCk % MOD;
    }

    std::cout << res << std::endl;
}