#ifndef SHO_LOCAL
#include <bits/stdc++.h>
#define debug(...) ;
#else
#include "debug.h"
#endif
using namespace std;
using ll = long long;

void solution() {
  ll n;
  cin >> n;
  ll ans = 2 * n;
  ans += n * (n - 1);
  cout << ans << '\n';

}
int main() {
  iostream::sync_with_stdio(0), cin.tie(0);

  int TT;
  cin >> TT;
  for (int tc = 1; tc <= TT; tc++) {
    // cout << "Case #" << tc << ": " << solution() << '\n';
    solution();
  }

  return 0;
}