//-------------------------------------------AC code-------------------------------------------//

#include<iostream>

using namespace std;

long long ans;
int n;

int main(){
    cin >> n;
    for(int c = 1; c <= n; c++){
        for(int k = 2; c * k <= n; k++){
            int a = k*c;
            int b = a-c;
            if((a^b) == c)  ans++;
        }
    }
    cout << ans;
    return 0;
}