# Find n-th term of series 2, 10, 30, 68, 130 …

Given a series 2, 10, 30, 68, 130 … Identify the pattern in the series and find the nth value in the series. Indices are starting from 1 . 1 <= n <= 200

Examples:

```Input : n = 12
Output : 1740

Input : n = 200
Output : 8000200
```

## Recommended: Please try your approach on {IDE} first, before moving on to the solution.

If observed carefully, pattern of the series can be noticed as n^3 + n.

Below is the implementation of above approach:

## C++

 `// C++ program to find n-th value ` `#include ` `using` `namespace` `std; ` ` `  `// Function to find nth term ` `int` `findValueAtX(``int` `n) ` `{ ` `    ``return` `(n * n * n) + n; ` `} ` ` `  `// drivers code ` `int` `main() ` `{ ` `    ``cout << findValueAtX(10) << endl; ` `    ``cout << findValueAtX(2) << endl; ` `    ``return` `0; ` `} `

## Java

 `// Java program to find n-th value ` `import` `java.io.*; ` ` `  `class` `GFG { ` `     `  `    ``// Function to find nth term ` `    ``static` `int` `findValueAtX(``int` `n) ` `    ``{ ` `        ``return` `(n * n * n) + n; ` `    ``} ` ` `  `    ``// driver code ` `    ``public` `static` `void` `main(String[] args) ` `    ``{ ` `        ``System.out.println(findValueAtX(``10``)); ` `        ``System.out.println(findValueAtX(``2``)); ` `    ``} ` `} ` ` `  `// This code is contributed by vt_m. `

## Python3

 `# Python3 program to find n-th value ` ` `  `# Function to find nth term ` `def` `findValueAtX(n): ` `    ``return` `(n ``*` `n ``*` `n) ``+` `n ` ` `  `# Driver Code ` `print``(findValueAtX(``10``)) ` `print``(findValueAtX(``2``)) ` ` `  `# This code is contributed by Azkia Anam. `

## C#

 `// C# program to find n-th value ` `using` `System; ` ` `  `class` `GFG { ` `     `  `    ``// Function to find nth term ` `    ``static` `int` `findValueAtX(``int` `n) ` `    ``{ ` `        ``return` `(n * n * n) + n; ` `    ``} ` ` `  `    ``// driver code ` `    ``public` `static` `void` `Main() ` `    ``{ ` `        ``Console.WriteLine(findValueAtX(10)); ` `        ``Console.WriteLine(findValueAtX(2)); ` `    ``} ` `} `

## PHP

 ` `

Output:

```1010
10
```

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Improved By : vt_m

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