# Find the Nth term of the series 14, 28, 20, 40,…..

Given a number . The task is to find the N-th term in the following series:

14, 28, 20, 40, 32, 64…..

Examples:

```Input : N = 5
Output : 32

Input : N = 6
Output : 64
```

Approach:

1. Initialize first number with 14.
2. Run a loop from i = 2 to N and do following steps:
• For Even i, double the previous term. For example if i = 2, current term will be 2*(term when i = 1), that is 2*14 = 28.
• For Odd i, subtract 8 from the previous term.
• Exit the loop and print the final number.

Below is the implementation of the above approach:

## C++

 `// CPP program to find the Nth term of ` `// the series 14, 28, 20, 40, ….. ` ` `  `#include ` `using` `namespace` `std; ` ` `  `// Function to find the N-th term ` `int` `findNth(``int` `N) ` `{ ` `    ``// initializing the 1st number ` `    ``int` `b = 14; ` ` `  `    ``int` `i; ` ` `  `    ``// loop from 2nd term to nth term ` `    ``for` `(i = 2; i <= N; i++) { ` `        ``// if i is even, double the ` `        ``// previous number ` `        ``if` `(i % 2 == 0) ` `            ``b = b * 2; ` `        ``// if i is odd, subtract 8 from ` `        ``// previous number ` `        ``else` `            ``b = b - 8; ` `    ``} ` ` `  `    ``return` `b; ` `} ` ` `  `// Driver Code ` `int` `main() ` `{ ` `    ``int` `N = 6; ` ` `  `    ``cout << findNth(N); ` ` `  `    ``return` `0; ` `} `

## Java

 `// Java program to find the Nth term of ` `// the series 14, 28, 20, 40, ` ` `  `import` `java.io.*; ` ` `  `class` `GFG { ` `   `  ` `  `// Function to find the N-th term ` ` ``static` `int` `findNth(``int` `N) ` `{ ` `    ``// initializing the 1st number ` `    ``int` `b = ``14``; ` ` `  `    ``int` `i; ` ` `  `    ``// loop from 2nd term to nth term ` `    ``for` `(i = ``2``; i <= N; i++) { ` `        ``// if i is even, double the ` `        ``// previous number ` `        ``if` `(i % ``2` `== ``0``) ` `            ``b = b * ``2``; ` `        ``// if i is odd, subtract 8 from ` `        ``// previous number ` `        ``else` `            ``b = b - ``8``; ` `    ``} ` ` `  `    ``return` `b; ` `} ` ` `  `// Driver Code ` ` `  ` `  `    ``public` `static` `void` `main (String[] args) { ` `        ``int` `N = ``6``; ` ` `  `    ``System.out.print(findNth(N)); ` `    ``} ` `} ` `// This code is contributed by shs `

## Python 3

 `# Python 3 program to find the Nth term  ` `# of the series 14, 28, 20, 40, ….. ` ` `  `# Function to find the N-th term ` `def` `findNth(N):  ` `     `  `    ``# initializing the 1st number ` `    ``b ``=` `14` ` `  `    ``# loop from 2nd term to nth term ` `    ``for` `i ``in` `range` `(``2``, N ``+` `1``): ` `     `  `        ``# if i is even, double the ` `        ``# previous number ` `        ``if` `(i ``%` `2` `=``=` `0``): ` `            ``b ``=` `b ``*` `2` `             `  `        ``# if i is odd, subtract 8 from ` `        ``# previous number ` `        ``else``: ` `            ``b ``=` `b ``-` `8` ` `  `    ``return` `b ` ` `  `# Driver Code ` `N ``=` `6` ` `  `print``(findNth(N)) ` ` `  `# This code is contributed ` `# by Akanksha Rai `

## C#

 `// C# program to find the Nth term of ` `// the series 14, 28, 20, 40, ` ` `  `using` `System; ` ` `  `public` `class` `GFG{ ` `    ``// Function to find the N-th term ` `static` `int` `findNth(``int` `N) ` `{ ` `    ``// initializing the 1st number ` `    ``int` `b = 14; ` ` `  `    ``int` `i; ` ` `  `    ``// loop from 2nd term to nth term ` `    ``for` `(i = 2; i <= N; i++) { ` `        ``// if i is even, double the ` `        ``// previous number ` `        ``if` `(i % 2 == 0) ` `            ``b = b * 2; ` `        ``// if i is odd, subtract 8 from ` `        ``// previous number ` `        ``else` `            ``b = b - 8; ` `    ``} ` ` `  `    ``return` `b; ` `} ` ` `  `// Driver Code ` `     `  `    ``static` `public` `void` `Main (){ ` `    ``int` `N = 6; ` `    ``Console.WriteLine(findNth(N)); ` `    ``} ` `} ` `// This code is contributed by ajit `

## PHP

 ` `

Output:

```64
```

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