/*#include<fstream>
using namespace std;
ifstream f("ssm.in");
ofstream g("ssm.out");
int n,i,maxi,mini,x,sum,pi,pf,p;
int main()
{
    f>>n;
    maxi=-2000000000;mini=0;p=1;
    for(i=1;i<=n;i++)
    {
        f>>x;
        sum=sum+x;
        if(maxi<sum-mini){ maxi=sum-mini; pi=p; pf=i; }
        if(sum<mini){ mini=sum; p=i+1; }
    }
    g<<maxi<<" "<<pi<<" "<<pf;
    return 0;
}*/
/*#include <fstream>
using namespace std;
ifstream f("ciur.in");
ofstream g("ciur.out");
bool prim[2006000];
int sol=0;
int n=0;
int main()
{
    f>>n;

for(int i=2;i<=n;++i)
  if (prim[i]==0)
   for(int j=i*2;j<=n;j+=i)
     prim[j]=1;

for(int i=2;i<=n;++i)
  if (prim[i]==0){//g<<i<<" ";
                  ++sol;
                  }
g<<sol;
return 0;}*/
#include <fstream>
using namespace std;
long n,i,j,a,b,sol;
int main()
{ifstream f("fractii.in");
ofstream g("fractii.out");
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
{
    a=i;b=j;
    while(a!=b)
    {if(a>b) a=a-b;
    else b=b-a;
    }if(a==1) sol++;
}
g<<sol;
    return 0;
}