#include <algorithm>
#include <complex>
#include <cstdlib>
#include <ctime>
#include <time.h>
#include <iomanip>
#include <iostream>
#include <map>
#include <math.h>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <vector>
#include <numeric>
#include <limits>
#include <type_traits>
#include <locale>

using namespace std;
#define SAY_YES cout << "YES" << endl;
#define SAY_Yes cout << "Yes" << endl;
#define SAY_NO cout << "NO" << endl;
#define SAY_No cout << "No" << endl;
#define IFYES(TRUE_OR_FALSE)   \
    if (TRUE_OR_FALSE)         \
    {                          \
        cout << "YES" << endl; \
    }                          \
    else                       \
    {                          \
        cout << "NO" << endl;  \
    }
#define IFYes(TRUE_OR_FALSE)   \
    if (TRUE_OR_FALSE)         \
    {                          \
        cout << "Yes" << endl; \
    }                          \
    else                       \
    {                          \
        cout << "No" << endl;  \
    }
#define IFyes(TRUE_OR_FALSE)   \
    if (TRUE_OR_FALSE)         \
    {                          \
        cout << "yes" << endl; \
    }                          \
    else                       \
    {                          \
        cout << "no" << endl;  \
    }
#define DEBUG_OUTPUT_ARRAY(XXX, ONE)                            \
    for (int i = 0; i < (ONE); i++)                             \
    {                                                           \
        cout << "DEBUG: i = " << i << " -> " << XXX[i] << endl; \
    }
#define DEBUG_OUTPUT_ARRAY2(XXX, ONE, TWO)                             \
    for (int i = 0; i < (ONE); i++)                                    \
    {                                                                  \
        cout << "<<< i = " << i << " >>>" << endl;                     \
        for (int j = 0; j < (TWO); j++)                                \
        {                                                              \
            cout << "DEBUG: j = " << j << " -> " << XXX[i][j] << endl; \
        }                                                              \
    }
#define DEBUG_OUTPUT_ARRAY2_BOX(XXX, ONE, TWO) \
    for (int i = 0; i < (ONE); i++)            \
    {                                          \
        cout << i << "  ";                     \
        for (int j = 0; j < (TWO); j++)        \
        {                                      \
            cout << XXX[i][j] << " ";          \
        }                                      \
        cout << endl;                          \
    }

typedef pair<long long int, long long int> pll;
typedef pair<long long int, pll> lpll;


const long long int mod = 1000000007;
const long long int INF = 1e18;
const long double PI=3.14159265358979323; 

long long int N,A[200],res=0;

long long int dp[200][5][5][5][5]={};

int main(){
    cout << fixed << setprecision(18);
    cin>>N;
    dp[0][3][3][3][3]=1;
    for(long long int i = 1; i <= N; i++){
        for(long long int j = 0; j < 4; j++){
            for(long long int k = 0; k < 4; k++){
                for(long long int l = 0; l < 4; l++){
                    for(long long int p = 0; p < 4; p++){
                        for(long long int p2 = 0; p2 < 4; p2++){
                            dp[i][k][l][p][p2]+=dp[i-1][j][k][l][p];
                            if(k==0&&p==2&&p2==1||k==0&&l==2&&p2==1||l==0&&p==2&&p2==1||l==2&&p==0&&p2==1||l==0&&p==1&&p2==2){
                                dp[i][k][l][p][p2]=0;
                            }
                            dp[i][k][l][p][p2]%=mod;
                        }
                    }
                }
            }
        }
    }
    for(long long int j = 0; j < 4; j++){
            for(long long int k = 0; k < 4; k++){
                for(long long int l = 0; l < 4; l++){
                    for(long long int p = 0; p < 4; p++){
                       res+=dp[N][j][k][l][p];
                    }
                }
            }
    }
    cout<<res%mod<<endl;
}




Measured memory_bytes: 768