#include<fstream>
using namespace std;
ifstream fin("fractii.in");
ofstream fout("fractii.out");
int nr,i,j;
void euclid()
{int c,a,b;
a=i;b=j;
while(b!=0)
{
c=a%b;
a=b;b=c;
}if(a==1)
nr++;
}
int main()
{
long n;
fin>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
euclid();
fout<<nr;
}