#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("fractii.in");
ofstream fout("fractii.out");
int main()
{
    int N,s;
    fin>>N;
    s=N;
    for(int i=1;i<=N;i++)
        for(int j=1;j<=N;j++)
            {if(j>i)
                if(j%i!=0)s++;
            if(i>=j)
                if(i&j!=0)s++;}
    fout<<s;
    return 0;
}