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

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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