#include <iostream>
#include <fstream>

using namespace std;

int main()
{
    ifstream f("datain.in");
    ofstream g("dataout.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 = a-b;
                else b = b-a;
            }
            if(b == 1) nr++;
        }
    }

    g << nr;

    return 0;
}