#include <bits/stdc++.h>

using namespace std;

using ll = long long;

const ll MOD = 1000000007;

ll modpow(ll x, ll n) {
    ll res = 1;
    while (n > 0) {
        if (n & 1) res = res * x % MOD;
        x = x * x % MOD;
        n >>= 1;
    }
    return res;
}

ll f[400005], fi[400005];

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n;
    cin >> n;
    f[0] = 1;
    for (int i = 1; i <= 2 * n; i++) f[i] = f[i - 1] * i % MOD;
    fi[2 * n] = modpow(f[2 * n], MOD - 2);
    for (int i = 2 * n; i > 0; i--) fi[i - 1] = fi[i] * i % MOD;
    ll ans = 0;
    for (int i = n; i <= 2 * n; i++) {
        if ((i + n) % 2 != 0) continue;
        int m = (i + n) / 2;
        (ans += n * f[i] % MOD * fi[m] % MOD * fi[i - m] % MOD * modpow(i, MOD - 2) % MOD) %= MOD;
    }
    cout << ans << endl;
    return 0;
}