LABS_EDUCATION/lr9/task_1/e2.java

import java.util.Scanner;

class Main {
    public static void m(int x){
        if ((2 * x + 1) < 20){
            m(2 * x + 1);
        }
        System.out.println("x = " + x);
    }

    public static void main(String[] args) {
        m(1);
    }
}