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 = 5Output :32Input :N = 6Output :64

**Approach:**

- Initialize first number with 14.
- 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 <iostream> ` `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; ` `} ` |

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## 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 ` |

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## 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 ` |

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## PHP

`<?php ` `// PHP program to find the Nth term of ` `// the series 14, 28, 20, 40, ….. ` ` ` `// Function to find the N-th term ` `function` `findNth(` `$N` `) ` `{ ` ` ` `// initializing the 1st number ` ` ` `$b` `= 14; ` ` ` ` ` `// 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 ` `$N` `= 6; ` `echo` `findNth(` `$N` `); ` ` ` `// This code is contributed by akt_mit ` `?> ` |

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**Output:**

64

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