#include <fstream>

using namespace std;



int main()
{
     ifstream f("fractii.in");
        ofstream g("fractii.out");
    int n,i,j,p=0,x,y;

    f>>n;
     for(i=1;i<=n;i++)
    for(j=1;j<=n;j++)
    {

        x=i;
        y=j;
       while(x!=y)

      {

        if(x>y)
        x-=y;
        else
        y-=x;
      }
        if(x==1)
         p++;
}
     g<<p;
    return 0;
}