#pragma GCC target("avx")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
void solve() {
	long long N;
	cin >> N;
	cout << N*(N+1) << endl;
}
int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);
	int T;
	cin >> T;
	while(T--) {
		solve();
	}
}