#include<iostream>
#include<cstdio>
#define N 20000000
#define mod 1000000007
using namespace std;
int read()
{
    char c=0;
    int sum=0;
    while (c<'0'||c>'9') c=getchar();
    while ('0'<=c&&c<='9') sum=sum*10+c-'0',c=getchar();
    return sum;
}
int fast_pow(int a,int b)
{
    int res=1,mul=a;
    while (b)
    {
	if (b&1) res=1ll*res*mul%mod;
	mul=1ll*mul*mul%mod,b>>=1;
    }
    return res;
}
void Adder(int &x,int d)
{
    x+=d;
    if (x>=mod) x-=mod;
    return;
}
void Adder2(int &x,int d)
{
    x+=d;
    if (x<0) x+=mod;
    return;
}
int n,ans,fac[N+1],invfac[N+1],inv[N+1];
int C(int x,int y)
{
    if (x<y) return 0;
    return 1ll*fac[x]*invfac[y]%mod*invfac[x-y]%mod;
}
int main()
{
    fac[0]=1;
    for (int i=1;i<=N;++i) fac[i]=1ll*fac[i-1]*i%mod;
    invfac[N]=fast_pow(fac[N],mod-2);
    for (int i=N-1;i>=0;--i) invfac[i]=1ll*invfac[i+1]*(i+1)%mod;
    for (int i=1;i<=N;++i) inv[i]=1ll*fac[i-1]*invfac[i]%mod;
    n=read(),ans=1;
    for (int i=0;i<=n;++i)
    {
	if (!(i&1)) Adder2(ans,-1ll*C(n,i)*inv[(i<<1)+1]%mod);
	else Adder(ans,1ll*C(n,i)*inv[(i<<1)+1]%mod);
    }
    printf("%d\n",ans);
    return 0;
}