#include <iostream>
#include <fstream>
using namespace std;
int main()
{
    ifstream f("fractii.in");
    ofstream g("fractii.out");
    short p, q, n, nr = 0, a, b;
    f >> n;
    for(p = 1; p <= n; p++)
        for(q = 1; q <= n; q++)
        {
            a = p; b = q;
            while(a!=b)
            {
                if(a > b) a -= b;
                else b -= a;
            }
            if(b == 1) nr++;
        }
    g << nr;
    return 0;
}