# Program to find the Nth term of series 5, 10, 17, 26, 37, 50, 65, 82, …

Given a number N. The task is to write a program to find the Nth term of the below series:

5, 10, 17, 26, 37, 50, 65, 82, …(N Terms)

**Examples:**

Input: N = 4 Output: 82 For N = 4 4th Term = ( 4 * 4 + 2 * 4 + 2) = 26 Input: N = 10 Output: 122

**Approach:** The generalized Nth term of this series:

Below is the required implementation:

## C++

`// CPP program to find the N-th term of the series:` `// 5, 10, 17, 26, 37, 50, 65, 82, ...` `#include <iostream>` `#include <math.h>` `using` `namespace` `std;` `// calculate Nth term of series` `int` `nthTerm(` `int` `n)` `{` ` ` `return` `pow` `(n, 2) + 2 * n + 2;` `}` `// Driver Function` `int` `main()` `{` ` ` `int` `N = 4;` ` ` `cout << nthTerm(N);` ` ` `return` `0;` `}` |

## Java

`// Java program to find the N-th term of the series:` `// 5, 10, 17, 26, 37, 50, 65, 82, ...` `import` `java.util.*;` `class` `solution` `{` `// calculate Nth term of series` `static` `int` `nthTerm(` `int` `n)` `{` ` ` `//return the final sum` ` ` `return` `(` `int` `)Math.pow(n, ` `2` `) + ` `2` `* n + ` `2` `;` `}` `// Driver Function` `public` `static` `void` `main(String arr[])` `{` ` ` `int` `N = ` `4` `;` ` ` `System.out.println(nthTerm(N));` `}` `}` `//This code is contributed by Surendra_Gangwar` |

## Python3

`# Python3 program to find the N-th` `# term of the series:` `# 5, 10, 17, 26, 37, 50, 65, 82, ...` `# from math lib. import everything` `from` `math ` `import` `*` `# calculate Nth term of series` `def` `nthTerm(n) :` ` ` ` ` `return` `pow` `(n, ` `2` `) ` `+` `2` `*` `n ` `+` `2` ` ` `# Driver code ` `if` `__name__ ` `=` `=` `"__main__"` `:` ` ` `N ` `=` `4` ` ` `print` `(nthTerm(N))` `# This code is contributed by` `# ANKITRAI1` |

## C#

`// C# program to find the` `// N-th term of the series:` `// 5, 10, 17, 26, 37, 50, 65, 82, ...` `using` `System;` `class` `GFG` `{` `// calculate Nth term of series` `static` `int` `nthTerm(` `int` `n)` `{` ` ` `//return the final sum` ` ` `return` `(` `int` `)Math.Pow(n, 2) +` ` ` `2 * n + 2;` `}` `// Driver Code` `public` `static` `void` `Main()` `{` ` ` `int` `N = 4;` ` ` `Console.Write(nthTerm(N));` `}` `}` `// This code is contributed` `// by ChitraNayal` |

## PHP

`<?php` `// PHP program to find the` `// N-th term of the series:` `// 5, 10, 17, 26, 37, 50, 65, 82, ...` `// calculate Nth term of series` `function` `nthTerm(` `$n` `)` `{` ` ` `return` `pow(` `$n` `, 2) + 2 * ` `$n` `+ 2;` `}` `// Driver Code` `$N` `= 4;` `echo` `nthTerm(` `$N` `);` `// This code is contributed` `// by Akanksha Rai(Abby_akku)` |

## Javascript

`<script>` `// JavaScript program to find the N-th term of the series:` `// 5, 10, 17, 26, 37, 50, 65, 82, ...` `// calculate Nth term of series` `function` `nthTerm( n)` `{` ` ` `return` `Math.pow(n, 2) + 2 * n + 2;` `}` `// Driver code` ` ` `let N = 4;` ` ` `document.write( nthTerm(N) );` `// This code contributed by aashish1995` `</script>` |

**Output:**

26

**Time Complexity:** O(1)

Attention reader! Don’t stop learning now. Participate in the **Scholorship Test for First-Step-to-DSA Course for Class 9 to 12 students**.