#include<bits/stdc++.h>
using namespace std;
int a[1001];
int main()
{
	a[0] = 1;
	a[1] = 1;
	a[2] = 5;
	for(int i = 3;i<=1000;i++)
	{
		a[i] = a[i-1] + 2*(i-1) + 1 + 2*(i-2) + 1;
	 } 
	int n;
	cin>>n;
	while(n>0)
	{
		n--;
		int b;
		cin>>b;
		cout<<a[b]<<endl;
	}
	
	return 0;
}