/************************************
Note Book:
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#include <iostream>
#include <cstdio>
#include <iomanip>
#include <cmath>
#include <algorithm>
#include <cstring>
#include <string>
#include <stack>
#include <queue>
#include <math.h>
#define LL long long
using namespace std;
const int INF = 0x3f3f3f3f;
const int N = 1e5 + 10;
int n , shuliang = 1; 
int main()
{
	cin >> n;
	while( n-- )
	{
		shuliang = shuliang + 1;
		shuliang = shuliang * 2; 
	}
	cout << shuliang;
	return 0;
}

#include<bits/stdc++.h>
#include <math.h>
#include <stack>
#include <stdio.h>
#include <iostream>
#include <vector>
#include <iomanip>
#include <string>
#include <algorithm>
using namespace std;
int main(){
    int n,m=1;
    cin>>n;
    while(n>0){
        m=(m+1)*2;
        n--;
    }
    cout<<m;
}

//dev c++[[990.cpp]]*******

//dev c++[top fanil]]******

//dev c++*www.temege.com

#include <stdio.h>

#include <iostream>

#include <math.h>

#include <queue>

#include <stack>

#include <vector>

#include <iomanip>

#include <string.h>

#include <algorithm>

using namespace std;

#define LL long long

const int N=1e6+10;

const int INF=0x3f3f3f3f;

int a[110];

int main()

{

int n;

cin>>n;

int sum=1;

while(n--)

{

	sum=(sum+1)*2;

}

cout<<sum<<endl;

return 0;

}