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

ifstream fin("fractii.in");
ofstream fout ("fractii.out");

int nr, n;

void functii ()
{
    int i, j;
    for (i = 1; i <= n; i++)
            for (j=1; j<= n; j++)
                if(i > 1 && j > 1)
                {
                    if(i%j != 0 && j%i != 0)
                        if(i%2 != 0 || j%2 != 0)
                            if(i%3 != 0 || j%3 != 0)
                                if(i%7 != 0 || j%7 != 0)
                                    nr++;
                }
                else nr++;
}

int main()
{
    fin>>n;
    functii();
    fout<<nr;
}