#include <cstring>
#include <vector>
#include <stdio.h>
#include <bitset>
#include <string>
#include <cmath>
#include <algorithm>
#include <cstdlib>
#include<sstream>
#include <iomanip>
#include<utility>
#include <iostream>
#define ll long long
double pi = 3.14159;
using namespace std;
int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);

	ll t; cin >> t;
	while (t--) {
		ll n; cin >> n;
		double y=(double)n/2;
		ll sum1 = y*(2+((n-1)*(n+1)));
		
		cout << sum1 << "\n";
	}

}