#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,n) for(int i=0;i<int(n);i++)

int main(){
  int t;
  cin>>t;
  rep(Ti,t){
    ll n;
    cin>>n;
    cout<<(n+1)*n<<endl;
  }
}