# Java Program to Print the Series 8 14 24 40 … N

In the previous article we have discussed about Java Program to Print the Series 7 26 63 124 215 … N

In this article we are going to see how to print the series 8 14 24 40 … N by using Java programming language.

## Java Program to Print the Series 8 14 24 40 … N

On observing the pattern carefully, we can see 1st number starts from 8

Then the next number follows a logic

8
8 x 1.5 + 2 = 14
14 x 1.5 + 3 = 24
24 x 1.5 + 4 = 40
40 x 1.5 + 5 = 65 … and so on

Example:

 8 14 24 40 65 81 …… N

*1.5+2             *1.5+3            *1.5+4              *1.5+5             *1.5+6

Let’s see different ways to print the series 8 14 24 40 … N

### Method-1: Java Program to Print the Series 8 14 24 40 … N By Using For Loop

Approach:

• Create Scanner class object.
• Declare an integer variable say ‘n’ which holds the Nth term of the series.
• Prompt the user to enter a number as value of n.
• Let declare an double variable say ‘result’ and initialize it to 8
• Let declare another integer variable say ‘add’ and initialize it to 2
• Use a for loop from i=1 to i<=n-1 where the loop is incremented by 1
• Inside the for loop we will find the value of result=(result*1.5)+add and add=add+1.
• Print the result in the series.

Program:

import java.util.*;
public class Main
{
public static void main(String [] args)
{
//creating object of Scanner class
Scanner s = new Scanner(System.in);
//Taking input of number of elements in the series
System.out.println("Enter numbers of terms in series ");
int n = s.nextInt();
double result = 8;
System.out.print((int)result);
//for loop to print the series
for (int i = 1; i <= n-1; i++)
{
System.out.print(" "+(int)result);
}
}
}
Output:

Enter numbers of terms in series
5
8 14 24 40 65

### Method-2: Java Program to Print the Series 8 14 24 40 … N By Using While Loop

Approach:

• Create Scanner class object.
• Declare an integer variable say ‘n’ which holds the Nth term of the series.
• Prompt the user to enter a number as value of n.
• Let declare an double variable say ‘result’ and initialize it to 8
• Let declare another integer variable say ‘add’ and initialize it to 2
• Declare and initialize an integer variable i=1
• Continue a while loop till i<=n-1, where i is incremented by 1.
• Inside the while loop we will find the value of result=(result*1.5)+add and add=add+1.
• Print the result in the series.

Program:

import java.util.*;
public class Main
{
public static void main(String [] args)
{
//creating object of Scanner class
Scanner s = new Scanner(System.in);
//Taking input of number of elements in the series
System.out.println("Enter numbers of terms in series ");
int n = s.nextInt();
double result=8;
System.out.print((int)result);
int i=1;
while(i<=n-1)
{
System.out.print(" "+(int)result);
i++;
}
}
}

Output:

Enter numbers of terms in series
7
8 14 24 40 65 103 162

### Method-3: Java Program to Print the Series 8 14 24 40 … N By Using User Defined Method

Approach:

• Create Scanner class object.
• Declare an integer variable say ‘n’ which holds the Nth term of the series.
• Prompt the user to enter a number as value of n.
• Call a user defined method printSeries() by passing n as parameter.
• Inside method declare an double variable say ‘result’ and initialize it to 8
• Declare another integer variable say ‘add’ and initialize it to 2
• Use a for loop from i=1 to i<=n-1 where the loop is incremented by 1
• Inside the for loop we will find the value of result=(result*1.5)+add and add=add+1.
• Print the result in the series.

Program:

import java.util.*;
public class Main
{
public static void main(String[] args)
{
// creating object of scanner class
Scanner s = new Scanner(System.in);
//Taking input of number of elements in the series
System.out.println("Enter numbers of terms in series ");
int n = s.nextInt();
// calling printSeries method to print the series
printSeries(n);
}

//printSeries() method to print the series
public static void printSeries(int n)
{
double result = 8, add = 2;
System.out.print((int)result);
//for loop to print the series
for (int i = 1; i <=n-1; i++)
{
System.out.print(" "+(int)result);

Output:
8 14 24 40 65 103 162 251 386