#include<iostream>
#include<fstream>

using namespace std;

bool nrPrimeIntreEle(int a, int b);

int main(){
	int count = 0;
	int n = 0;
	int a = 0;
	int b = 0;
	
	ifstream inFile;
	inFile.open("fractii.in.txt");
	ofstream outFile;
	outFile.open("fractii.out.txt");
	
	while (!inFile.eof()){
		inFile >> n;
		for (int i = 1; i <= n; i++){
			for (int j = 1; j <= n; j++){
				a = i;
				b = j;
				while (a != b){
					if (a > b){
						a = a - b;
					}
					else{
						b = b - a;
					}
				}
				if (a == 1){
					count++;
				}
			}
		}
		
		outFile << count << "\n";

		count = 0;
	}
	outFile.close();
	inFile.close();
	return 0;
}