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C++ program to find Nth term of the series 3, 14, 39, 84…
In this problem, we are given an integer N. Our task is to create a program to Find Nth term of series 3, 14, 39, 84…
Let’s take an example to understand the problem,
Input
N = 4
Output
84
Explanation
4th term − ( (4*4*4) + (4*4) + 4 ) = 64 + 16 + 4 = 84
Solution Approach
A simple approach to solve the problem is by using the general formula for the nth term of the series. The formula for,
Nth term = ( (N*N*N) + (N*N) + (N))
Program to illustrate the working of our solution,
Example
#include <iostream> using namespace std; int calcNthTerm(int N) { return ( (N*N*N) + (N*N) + (N) ); } int main() { int N = 6; cout<<N<<"th term of the series is "<<calcNthTerm(N); return 0; }
Output
6th term of the series is 258
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