#include <iostream>
#include <cstdio>

using namespace std;

const int MOD = 1e9 + 7;

int n, ans;

int main() {
    // freopen("led.in", "r", stdin);
    // freopen("led.out", "w", stdout);

    scanf("%d", &n);
    
    ans = 1;
    n *= 2;
    while (n) {
        ans = 1LL * (n - 1) * n / 2 % MOD * ans % MOD;
        n -= 2;
    }

    printf("%d\n", ans);

    return 0;
}