Feynman

3410. Feynman Problem code: SAMER08F

#include<stdio.h>
int main()
{
    int n;
       while(1)
       {
              scanf("%d",&n);
              if(n==0)
                  break;
              printf("%d\n", (n*(n+1)*(2*n+1))/6 );
        }
        return 0;
}