#include <bits/stdc++.h>
using namespace std;

#define d(x) cerr << #x ":" << x << endl;
#define dd(x, y) cerr << "(" #x "," #y "):(" << x << "," << y << ")" << endl
#define rep(i, n) for (int i = (int)(0); i < (int)(n); i++)
#define all(v) v.begin(), v.end()
#define dump(v)                  \
    cerr << #v ":[ ";            \
    for (auto macro_vi : v) {    \
        cerr << macro_vi << " "; \
    }                            \
    cerr << "]" << endl;
#define ddump(v)                           \
    cerr << #v ":" << endl;                \
    for (auto macro_row : v) {             \
        cerr << "[";                       \
        for (auto macro__vi : macro_row) { \
            cerr << macro__vi << " ";      \
        }                                  \
        cerr << "]" << endl;               \
    }
using lint       = long long;
const int INF    = 1e9;
const lint LINF  = 1e18;
const double EPS = 1e-10;

const int mod = 1000000007;
struct mint {
    long long x;
    mint(long long x = 0) : x((x % mod + mod) % mod) {}
    mint& operator+=(const mint a) {
        if ((x += a.x) >= mod) x -= mod;
        return *this;
    }
    mint& operator-=(const mint a) {
        if ((x += mod - a.x) >= mod) x -= mod;
        return *this;
    }
    mint& operator*=(const mint a) {
        (x *= a.x) %= mod;
        return *this;
    }
    mint operator+(const mint a) const {
        mint res(*this);
        return res += a;
    }
    mint operator-(const mint a) const {
        mint res(*this);
        return res -= a;
    }
    mint operator*(const mint a) const {
        mint res(*this);
        return res *= a;
    }
    mint pow(long long t) const {
        if (!t) return 1;
        mint a = pow(t >> 1);
        a *= a;
        if (t & 1) a *= *this;
        return a;
    }

    // for prime mod
    mint inv() const { return pow(mod - 2); }
    mint& operator/=(const mint a) { return (*this) *= a.inv(); }
    mint operator/(const mint a) const {
        mint res(*this);
        return res /= a;
    }
};

struct combination {
    vector<mint> fact, ifact;
    combination(int n) : fact(n + 1), ifact(n + 1) {
        assert(n < mod);
        fact[0] = 1;
        for (int i = 1; i <= n; ++i)
            fact[i] = fact[i - 1] * i;
        ifact[n] = fact[n].inv();
        for (int i = n; i >= 1; --i)
            ifact[i - 1] = ifact[i] * i;
    }
    mint operator()(int n, int k) {
        if (k < 0 || k > n) return 0;
        return fact[n] * ifact[k] * ifact[n - k];
    }
    mint operator()(int n) { return fact[n]; }
};

lint S;

int main() {
    cin >> S;

    vector<vector<mint>> cnt(S + 1, vector<mint>(4, 0));
    cnt[0][0] = 1;
    rep(i, S) rep(j, 4) {
        if (j == 0) {
            cnt[i + 1][1] += cnt[i][j];
        } else if (j == 1) {
            cnt[i + 1][2] += cnt[i][j];
        } else if (j == 2) {
            cnt[i + 1][0] += cnt[i][j];
            cnt[i + 1][3] += cnt[i][j];
        } else {
            cnt[i + 1][0] += cnt[i][j];
            cnt[i + 1][3] += cnt[i][j];
        }
    }

    mint ans = cnt[S][3];

    // rep(i, S + 1) {
    //     rep(j, 4) { cout << cnt[i][j].x; }
    //     cout << " \n " << endl;
    // }

    cout << ans.x << endl;

    return 0;
}

Measured memory_bytes: 3744