#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  ;
  int tt;
  cin >> tt;
  while (tt--) {
    int n;
    cin >> n;
    cout << (1ll * ((n - 1) / 2) * (((n - 1) / 2) + 1) *
             (2 * ((n - 1) / 2) + 1) * 8) /
                6
         << '\n';
  }
  return 0;
}
