#include <iostream>
#include <vector>
using namespace std;
#define MOD (int)(1e9+7)

int main()
{
	int N; cin >> N;

	vector<int>ruiseki(2*N);
	for (int i = 1; i < 2*N; i++) {
		ruiseki[i] += ruiseki[i - 1] + i;
		ruiseki[i] %= MOD;
	}

	long long x = 1;
	for (int i = 0; i < N; i++) {
		x *= ruiseki[2*i+1];
		x %= MOD;
	}
	cout << x << endl;

	return 0;
}