#include <bits/stdc++.h>
using namespace std;
using ll=long long;
using Vl=vector<ll>;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    ll n;cin >>n;
    Vl G(6*n+1,0);
    G[0]=1;
    for (int j = 0; j < 8; ++j) {
        auto ng = G;
        for (int i =n+1; i <=6*n;++i) {
            G[i]=ng[i]-ng[i-(n+1)];
        }
        for (int i = 1; i <=6*n; ++i) {
            G[i]+=G[i-1];
        }
    }
    cout <<G[6*n]<<"\n";
    return 0;
}