Java Program to Print the Series 1 2 9 28 65 N

Java Program to Print the Series 1 2 9 28 65 …N

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In the previous article, we have discussed about Java Program to Print Pell Number Series 0 1 2 5 12 29 70 …N

In this article we are going to see how to print the series 1 2 9 28 65….N  by using Java programming language.

Java Program to Print the Series 1 2 9 28 65 …N

On observing the pattern carefully, we can see the numbers in the series are in the form of a*a*a+1 where value of a starts from 1 and goes up to N.

Example:

N=n*n*n+1

1=0*0*0+1

2=1*1*1+1

9=2*2*2+1

28=3*3*3+1

65=4*4*4+1

Let’s see different ways to print the series 1 2 9 28 65….N.

Method-1: Java Program to Print the Series 1 2 9 28 65 …N By Using For Loop

Approach: 

  • Declare an int variable say ‘n’ which holds the nth value of the series.
  • Create Scanner class object.
  • Prompt the user to enter a number as value of n.
  • Use a for loop from i=0 to i<n
  • Print the result as i*i*i+1

Program:

import java.util.*;
public class Main
{
   public static void main(String[] args)
   {
        //Scanner class object created
        Scanner s = new Scanner(System.in);
        System.out.println("Enter the nth value of the series");
        //taking input of 'n' value from user
        int n=s.nextInt(); 
        //printing the series by using for loop
        for(int i = 0; i<n; i++)
        {
          System.out.print(i*i*i+1+ " ");
        }
   }
}

Output:

Enter the nth value of the series
10
1 2 9 28 65 126 217 344 513 730

Method-2: Java Program to Print the Series 1 2 9 28 65 …N By Using While Loop

Approach:

  • Declare an int variable say ‘n’ which holds the nth value of the series
  • Create Scanner class object.
  • Prompt the user to enter a number as value of n.
  • Use a while loop from i=0 to i<n
  • Print the result as i*i*i+1

Program:

import java.util.*;
public class Main
{
   public static void main(String[] args)
   {
        //Scanner class object created
        Scanner s = new Scanner(System.in);
        System.out.println("Enter the nth value of the series");
        //taking input of 'n' value from user
    	int n=s.nextInt(); 
        //printing the series by using while loop
        int i = 0;
        while(i<n)
        {
          System.out.print(i*i*i+1+ " ");
             i++;
        }
   }
}

Output:

Enter the nth value of the series
10
1 2 9 28 65 126 217 344 513 730

Method-3: Java Program to Print the Series 1 2 9 28 65 …N By Using User Defined Method

Approach:

  • The same logic as method 1 but this time we are moving the for inside a user-defined method.
  • Create Scanner class object.
  • Prompt the user to enter a number as value of n.
  • Use a for loop i=0 and i<n
  • Print the result as i*i*i+1

Program:

import java.util.*;
public class Main
{
    public static void main(String[] args)
   {
        //Scanner class object created
        Scanner s = new Scanner(System.in);
        System.out.println("Enter the nth value of the series");
        //taking input of 'n' value from user
        int n=s.nextInt(); 
        //printing the series by using method calling
        m1(n);
   }
    public static void m1(int n)
    {
        for(int i = 0; i<n; i++)
        {
          System.out.print(i*i*i+1 + " ");
        }
    }
}

Output:

Enter the nth value of the series
10
1 2 9 28 65 126 217 344 513 730

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