#include <iostream>
#include <fstream>
using namespace std;

int main()
{
    long a, n=0, c=1;
    ifstream in;
    in.open("fractii.in");
    in>>a;
    in.close();
    for(long i=1;i<=a;i++)
    {
        for(long j=1;j<=a;j++)
        {
            for(int x=1;x<=i || x<=j;x++)
            {
                if(j%x==0 && i%x==0 && !(x>i) && !(x>j))
                   {
                     c=x;
                   }
            }
            if(c==1)
               {
                   n++;
               }
            c=1;
        }
        c=1;
    }
    ofstream out;
    out.open("fractii.out");
    out<<n;
    out.close();
    return 0;
}