#include <iostream>
#include <fstream>

using namespace std;

int fractieir(int a, int b)
{
    int x = 2;
    while(x <= a && x <= b)
    {
        if(a%x == 0 && b%x == 0)
            return 0;
        x++;
    }
    return 1;
}

int main()
{
    int n, k = 0;
    ifstream f("fractii.in");
    ofstream g("fractii.out");
    f >> n;
    for(int i = 1; i <= n; i++)
        for(int j = 1; j <= n; j++)
            if(fractieir(i, j))
                k++;
    g << k;
    return 0;
}