Sum of Series||C language||programming_info ||Series problem 10

To calculate sum of the first N terms of the series:

5,12,23,38,......

Solution using C language:

#include <stdio.h>

int main() {

   int n ;

   printf("Enter the range\n");

    scanf("%d",&n);

   int sum = (2*(n*(n+1)(2*n+1)/6)+(n(n+1)/2)+(2*n));

   printf("the sum of series till %d is %d", n,sum);

   return 0;

}

Output:

Enter the range

6

the sum of series till 6 is 215

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