#include <bits/stdc++.h>
#define LL long long
using namespace std;
const int NR = 1e7 + 5, MOD = 1e9 + 7;

LL qpow(LL x, LL y) {
    LL res = 1;
    while (y) {
        if (y & 1) res = res * x % MOD;
        y >>= 1, x = x * x % MOD;
    }
    return res;
}

int n, tn;
LL fac[NR], ifac[NR];
LL C(int x, int y) {
    return fac[x] * ifac[y] % MOD * ifac[x - y] % MOD;
}

int main() {
    ios::sync_with_stdio(0), cin.tie(0);
    cin >> n, tn = n << 1;
    fac[0] = 1;
    for (int i = 1; i <= tn; i++) fac[i] = fac[i - 1] * i % MOD;
    ifac[tn] = qpow(fac[tn], MOD - 2);
    for (int i = tn; i >= 1; i--) ifac[i - 1] = ifac[i] * i % MOD;
    LL ans = 0;
    for (int i = 0; i < n; i++)
        (ans += (i & 1 ? MOD - 1 : 1) * C(tn, i) % MOD * qpow(n - i, tn + 1)) %= MOD;
    cout << ans * ifac[tn] % MOD * qpow(tn + 1, MOD - 2) % MOD * 2 % MOD << '\n';
    cerr << (double)clock() / CLOCKS_PER_SEC << endl;
    return 0;
}