#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  ;
  int t;
  cin >> t;
  while (t--) {
    long long int n, sum = 0;
    cin >> n;
    for (long long int i = 1, j = 0; i <= n; i += 2, j++) {
      sum += ((4 * i) - 4) * j;
    }
    cout << sum;
    cout << "\n";
    ;
  }
  return 0;
}
