#include <iostream>
#include <fstream>

using namespace std;

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

int fct(int a, int b)
{
    while(a!=b)
    {
        if(a>b)
        {
            a=a-b;
        }
        else b=b-a;
    }
    if(b==1)return b;
    else return 0;
}
int main()
{
    int n, i, j;
    in>>n;
    int cont=0;
    for(i=1;i<=n;i++)
    {
        for(j=1;j<=n;j++)
        {
            cont+=fct(i,j);
        }
    }
    out<<cont;
    return 0;
}