#include<iostream>
#include<cmath>
#include<algorithm>
#include<string>
#include<map>
using namespace std;
int main() {
	int n, num;
	cin >> n;
	while (n--) {
		cin >> num;
		cout << (num + 2 * num) * (abs(2 * num) - abs(num) + 1) / 2 << endl;
	}
	return 0;
}