Java猴子偷桃递归算法

package com.itheima.d1_file;


public class DiGui {
    public static void main(String[] args) {
        System.out.println(f(1));
        System.out.println(f(2));
    }
    public static int f(int x){
        if(x==10){
            return 1;
        } else {
            return 2*f(x+1) + 2;
        }
    }
}