#include <fstream>
using namespace std;
ifstream f("fractii.in");
ofstream g("fractii.out");
int n,i,j,a,b,nr,r;
int main()
{
    f>>n;
    for(i=1;i<=n;i++)
        for(j=1;j<=n;j++)
        {
            a=i;
            b=j;
          while(b>0)
          {
              r=a%b;
              a=b;
              b=r;
          }
          if(a==1)
            nr++;
        }
    g<<nr;
    return 0;
}