南阳理工OJ之猴子吃桃问题

 1 import java.util.Scanner;
 2 
 3 public class Main {
 4 
 5     public static void main(String[] args) {
 6         
 7         Scanner sc=new Scanner(System.in);
 8         
 9         int times=sc.nextInt();
10         
11         while(times-->0){
12             int n=sc.nextInt();
13             System.out.println(solve(n));
14         }
15         
16     }
17     
18     public static int solve(int n){
19         int ans=1;
20         while(n-->0) ans=(ans+1)*2;
21         return ans;
22     }
23     
24 }