#include <iostream>
#include <fstream>
using namespace std;
ifstream f("fractii.in");
ofstream g("fractii.out");
int main()
{
    int n,nr=0,i,j,cop1,cop2;
    f>>n;
    for(i=1;i<=n;i++)
        for(j=1;j<=n;j++)
        {
            cop1=i;
            cop2=j;
            while(cop1!=cop2)
                if(cop1>cop2)
                    cop1-=cop2;
                        else
                            cop2-=cop1;
            if(cop1==1)
              nr++;

        }
    g<<nr;
}