#include<iostream>

using namespace std;
#define repeat(i, n) for(int i=0; i<(n); i++)
#define int long long

signed main(){

   int N;
   cin>> N;

   const int mod=1e9+7;
   int a=1, b=1;
   repeat(i, N) (a*=(i+1))%=mod;
   repeat(i, N) (b*=(2*(i+1)-1))%=mod;

   cout<< a*b%mod<< endl;

   return 0;
}