#include <iostream>
using namespace std;

const int N=1000000+1;
long long freq[N];

void solve()
{
    freq[0]=0;
    freq[1]=1;
    freq[2]=5;
    freq[3]=15;

    long long z=10;
    long long weee=9;
    for(int i=4;i<N;i++){
        z+=weee;
        freq[i]=freq[i-1]+z;
        weee+=3;

    }
}

int main()
{

    solve();
    int t;cin>>t;

    for(int i=0;i<t;i++){
        int x;cin>>x;
        cout<<freq[x]<<endl;
    }


    return 0;
}