#include <bits/stdc++.h>

using namespace std;


struct Combination {
  int mod;
  vector< int64_t > mfact, rfact;

  Combination(int sz, int mod) : mfact(sz + 1), rfact(sz + 1), mod(mod) {
    mfact[0] = 1;
    for(int i = 1; i < mfact.size(); i++) {
      mfact[i] = mfact[i - 1] * i % mod;
    }
    rfact[sz] = inv(mfact[sz]);
    for(int i = sz - 1; i >= 0; i--) {
      rfact[i] = rfact[i + 1] * (i + 1) % mod;
    }
  }

  int64_t fact(int k) const {
    return (mfact[k]);
  }

  int64_t pow(int64_t x, int64_t n) const {
    int64_t ret = 1;
    while(n > 0) {
      if(n & 1) (ret *= x) %= mod;
      (x *= x) %= mod;
      n >>= 1;
    }
    return (ret);
  }

  int64_t inv(int64_t x) const {
    return (pow(x, mod - 2));
  }

  int64_t P(int n, int r) const {
    if(r < 0 || n < r) return (0);
    return (mfact[n] * rfact[n - r] % mod);
  }

  int64_t C(int p, int q) const {
    if(q < 0 || p < q) return (0);
    return (mfact[p] * rfact[q] % mod * rfact[p - q] % mod);
  }

  int64_t H(int n, int r) const {
    if(n < 0 || r < 0) return (0);
    return (r == 0 ? 1 : C(n + r - 1, r));
  }
};

const int mod = 1e9 + 7;

int main() {
  int N;
  cin >> N;
  Combination c(2 * N, mod);

  int ret = 0;
  for(int i = N; i <= 2 * N; i++) {
    if(i % 2 == N % 2) {
      ret += 1LL * N * c.C(i, (i + N) / 2) % mod * c.inv(i) % mod;
      ret %= mod;
    }
  }
  cout << ret << endl;
}