#include <iostream>
#include <fstream>

using namespace std;

bool prime(int a, int b) {
    for(int i=a;i>1;i--)
        if(a%i == 0 && b % i == 0)
            return false;
    return true;
}

int main() {
    ifstream in("fractii.in");
    ofstream out("fractii.out");
    int n;
    int total=0;
    in>>n;
    for(int i=1;i<=n;i++)
        for(int j=1;j<=n;j++)
            if(prime(i,j)) total++;
    out<<total;
    in.close();
    out.close();
    return 0;
}