#include<stdio.h>
#include<iostream>
using namespace std;

int main(){
    int n; 
    cin>>n;
    while(n--){
        int sum = 0;
        int m;
        cin>>m;
        for(int i= 1; i<=2*m-1; i+=2){
            sum+=i;
        }
        cout<<sum*2-2*m+1<<endl;
    }
}