#define _GLIBCXX_DEBUG //遅い可能性がある 
#include <bits/stdc++.h>
#include<atcoder/all>
using namespace atcoder;
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define ALL(a) (a).begin(),(a).end() //lower_bound(ALL(a),x)
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<vector<int>>;

int INF = 100100100;

const vector<int> dx = {1, 0, -1, 0};
const vector<int> dy = {0, 1, 0, -1};

ll cmb3(ll a) {
    ll ret = a * (a-1) * (a-2) /6;
    return ret;
}

int main() {
    int t;
    cin >> t;
    rep(i,t) {
        int n;
        cin >> n;
        ll ans = cmb3(n) * 4;
        cout << ans << endl;
    }
    return 0;
}