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

void solve(){
	cout<<n*(n+1)<<endl;
}

signed main(){
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	int t;
	cin >> t;
	while(t--){
	cin >> n;
	solve();
	}
}