**#include**<stdio.h>

**int**

**main**(){

**int**n,i;

**int**sum=0;

printf("Enter
the n i.e. max values of series: ");

scanf("%d",&n);

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

printf("Sum of
the series : ");

**for**(i =1;i<=n;i++){

**if**(i != n)

printf("%d^2 +
",i);

**else**

printf("%d^2 =
%d ",i,sum);

}

**return**0;

}

**Sample output:**

Enter the n i.e. max values
of series: 5

Sum of the series: 1^2 + 2^2
+ 3^2 + 4^2 + 5^2 = 55

**Mathematical Formula:**

Sum of the series 1

^{2}+ 2^{2}+ 3^{2}+ … + n^{2}=
n (n+1) (2n+1)/6

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