#include <bits/stdc++.h>
using namespace std;
template <typename T>
ostream& operator+(ostream& out, const vector<T>& vec) {
  for (const auto& x : vec) {
    out << x << " ";
  }
  out << "\n";
  return out;
}
template <typename T>
ostream& operator*(ostream& out, const vector<T>& vec) {
  for (const auto& x : vec) {
    out + x;
  }
  return out;
}
template <typename T>
istream& operator>>(istream& in, vector<T>& vec) {
  for (auto& x : vec) {
    in >> x;
  }
  return in;
}
void solve() {
  long long int n;
  cin >> n;
  long long int mid = n / 2;
  long long int ans = n * (mid) * (mid + 1) * 4;
  cout << ans / 3 << "\n";
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int t;
  cin >> t;
  while (t--) {
    solve();
  }
}
