#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair

using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
const double eps = 1e-8;
const int NINF = 0xc0c0c0c0;
const int INF = 0x3f3f3f3f;
const ll mod  = 1e9 + 7;
const ll N = 1e6 + 5;

ll qpow(ll x,ll y){
    ll ans=1;
    x%=mod;
    while(y>0){
        if(y&1) ans=ans*x%mod;
        x=x*x%mod;
        y>>=1;
    }
    return ans;
}

ll C(ll x,ll y){
    ll ans=1;
    for(ll i=x;i>x-y;i--){
        ans=ans*i%mod;
    }
    ll res=1;
    for(ll i=1;i<=y;i++){
        res=res*i%mod;
    }
    return ans*qpow(res,mod-2)%mod;
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    ll n;
    while (cin>>n)
    cout<<((C(n,2)+C(n,4)+1)%mod+mod)%mod<<'\n';
    return 0;
}