/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		System.out.println(soma(0));
		System.out.println(soma(1));
		System.out.println(soma(2));
		System.out.println(soma(3));
		System.out.println(soma(4));
	}
	
	public static int soma(int quantidade) {
	    if(quantidade == 0) {
	        return 5;
	    } else {
	        return soma(quantidade - 1) + 2*(quantidade + 2) + 1 ;
	    }
	}
}