func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int n;       cin >> n;       long long dp[500005] = {0};       dp[3] = 8;       long long fac = 2;       for (long long i = 5; i <= 500000; i += 2) {         dp[i] = dp[i - 2] + fac * (i + i + i - 2 + i - 2);         ++fac;       }       cout << dp[n] << endl;     }   }   