#include <fstream>

using namespace std;

int prime(int a,int b)
{
    int r;
    while(b)
    {
        r=a%b;
        a=b;
        b=r;
    }
    return a;
}

int main()
{
    int N,P,Q,nr=0;
    ifstream f("fractii.in");
    ofstream g("fractii.out");
    f>>N;
    for(P=1;P<=N;P++)
    for(Q=1;Q<=N;Q++)
    if(prime(P,Q)==1)
    nr++;
    g<<nr;
    return 0;
}