Harmonic.java

// Java Program to print Harmonic Series : 2 6 12 20 30

import java.util.*;
class Harmonic
{
    public static void main(String args[])
    {
        int i;
        Scanner sc = new Scanner(System.in);
        for(i = 1; i < 5; i++)
        {
            System.out.print(i * i + i);
        }
    }
}