#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for(ll i=0;i<n;i++)
#define repl(i,l,r) for(ll i=(l);i<(r);i++)
#define per(i,n) for(ll i=(n)-1;i>=0;i--)
#define perl(i,r,l) for(ll i=r-1;i>=l;i--)
#define fi first
#define se second
#define ins insert
#define pqueue(x) priority_queue<x,vector<x>,greater<x>>
#define all(x) (x).begin(),(x).end()
#define CST(x) cout<<fixed<<setprecision(x)
#define rev(x) reverse(x);
using ll=long long;
using vl=vector<ll>;
using vvl=vector<vector<ll>>;
using pl=pair<ll,ll>;
using vpl=vector<pl>;
using vvpl=vector<vpl>;
const ll MOD=1000000007;
const ll MOD9=998244353;
const int inf=1e9+10;
const ll INF=4e18;
const ll dy[9]={1,0,-1,0,1,1,-1,-1,0};
const ll dx[9]={0,1,0,-1,1,-1,1,-1,0};
template <typename T> inline bool chmax(T &a, T b) {
  return ((a < b) ? (a = b, true) : (false));
}
template <typename T> inline bool chmin(T &a, T b) {
  return ((a > b) ? (a = b, true) : (false));
}
const int mod = MOD;
const int max_n = 200005;
struct mint {
  ll x; // typedef long long ll;
  mint(ll x=0):x((x%mod+mod)%mod){}
  mint operator-() const { return mint(-x);}
  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 { return mint(*this) += a;}
  mint operator-(const mint a) const { return mint(*this) -= a;}
  mint operator*(const mint a) const { return mint(*this) *= a;}
  mint pow(ll t) const {
    if (!t) return 1;
    mint a = pow(t>>1);
    a *= a;
    if (t&1) a *= *this;
    return a;
  }
  bool operator==(const mint &p) const { return x == p.x; }
  bool operator!=(const mint &p) const { return x != p.x; }
  // 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 { return mint(*this) /= a;}
};
istream& operator>>(istream& is, mint& a) { return is >> a.x;}
ostream& operator<<(ostream& os, const mint& a) { return os << a.x;}
using vm=vector<mint>;
using vvm=vector<vm>;
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];
  }
}comb(max_n);
int main(){
  ll n;cin >> n;
  vvm dp(n,vm(n));
  rep(i,n)dp[n-1][i]=1;
  rep(i,n-1){
    /*rep(j,n){
      rep(k,n){
        ll f=(i-1+n)%n;
        if(j-(f+1)<k&&j<k+(i+1))dp[i][k]+=dp[f][j];
      }
    }*/
    ll f=(i-1+n)%n;
    vm cum(n+1);
    rep(j,n)cum[j+1]=cum[j]+dp[f][j];
    rep(j,n){
      ll ms=min({j+(f+1),j+(i+1),n});
      if(ms<0)continue;
      dp[i][j]=cum[ms];
    }
  }

  mint ans=0;
  rep(i,n-1)ans+=dp[n-2][i];
  //cout << ans << endl;
  rep(i,n)rep(j,n)dp[i][j]=0;
  rep(i,n-1)dp[n-1][i+1]=1;
  rep(i,n-1){
    /*rep(j,n){
      rep(k,n){
        ll f=(i-1+n)%n;
        if(j-(f+1)<k&&j<k+(i+1))dp[i][k]+=dp[f][j];
      }
    }*/
    ll f=(i-1+n)%n;
    vm cum(n+1);
    rep(j,n)cum[j+1]=cum[j]+dp[f][j];
    rep(j,n){
      ll ms=min({j+(f+1),j+(i+1),n});
      if(ms<0)continue;
      dp[i][j]=cum[ms];
    }
  }
  ans+=dp[n-2][n-1];
  cout << ans << endl;
}