#include<stdio.h>
#include<math.h>
int main()
{
	int n;
	scanf("%d",&n);
	int x,sum;
	while(scanf("%d",&x)!=EOF)
	{
		if(x==1){
			sum=1;}
		else{
			sum=((x-1)*(x-1))*2+2*x-1;}
		printf("%d\n",sum);
	}
	
}