#include <bits/stdc++.h>
using namespace std;
signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  long long t;
  cin >> t;
  while (t--) {
    long long n;
    cin >> n;
    long long ans = 0;
    for (long long i = 3; i <= n; i += 2) {
      ans += (i * i - (i - 2) * (i - 2)) * ((i - 1) / 2);
    }
    cout << ans << endl;
  }
  return 0;
}
