#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using namespace std;
using ll=long long;
using ld=double;
ld pie=3.14159265359;
ll mod=998244353;
ll inf=100000001;
int main(){
    ll t;
    cin >> t;
    for (ll o = 0; o < t; o++)
    {
        ll n;
        cin >> n;
        cout << 2+(n+2)*(n-1) << endl;
    }
    
}