#include <bits/stdc++.h>
#include <atcoder/all>
#include <vector>
#include <set>
#include <queue>
#include <utility>
#include <map>
#include <regex>
#include <math.h>
#include <random>
#include <algorithm>
#define pb push_back
#define all(x) begin(x), end(x)
#define gall(x) begin(x), end(x), greater<>()
#define ll long long
#define rep(i,x) for(int i=0;i<x;i++)
#define P pair<int, int>
#define lP pair<ll, ll>
using namespace std;
using namespace atcoder;
using mint=modint998244353;

const int INF=1e9;

int main()
{ 
   int t; cin>>t;
   rep(i,t){
    ll n,ans=0; cin>>n;
    ans=n*(n+1);
    cout<<ans<<endl;
   }

return  0;
}