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

const int M = int(1e9) + 7;

int f[1 << 19], vf[1 << 19];

int int_pow(int v, int p) {
  int r = 1;
  for (int i = p; i; i >>= 1) {
    if (i & 1) r = 1LL * r * v % M;
    v = 1LL * v * v % M;
  }
  return r;
}

int cmb(int n, int m) {
  return 1LL * f[n] * vf[m] % M * vf[n - m] % M;
}

signed main() {
  ios::sync_with_stdio(false);
  int N;
  cin >> N;
  for (int i = f[0] = 1; i < 1 << 19; ++i) {
    f[i] = 1LL * f[i - 1] * i % M;
  }
  vf[(1 << 19) - 1] = int_pow(f[(1 << 19) - 1], M - 2);
  for (int i = (1 << 19) - 2; ~i; --i) {
    vf[i] = 1LL * vf[i + 1] * (i + 1) % M;
  }
  int ans = 1;
  for (int i = N + 2; i <= 2 * N; i += 2) {
    int r = i - N >> 1;
    (ans += (cmb(i - 1, r) - cmb(i - 1, r - 1)) % M) %= M;
  }
  if (ans < 0) ans += M;
  cout << ans << endl;
  return 0;
}