#include <bits/stdc++.h>
using namespace std;

void fast_io() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
}

int main() {
	fast_io();
	int t;
	cin >> t;
	for (; t--;) {
		long long n;
		cin >> n;
		cout << n * (n + 1) << "\n";
	}
}