#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
ll n,cnt; 

bool check(ll num1,ll num2)
{
	ll a=num1,b=num2;
	while(a!=0||b!=0)
	{
		if((a%2)==1&&(b%2)==1)
			return false;
		a/=2,b/=2;
	}
	a=num1,b=num2;
	while(a!=0||b!=0)
	{
		if((a%3)+(b%3)>=3)
			return false;
		a/=3,b/=3;
	}
	return true;
}

int main()  
{
	cin>>n;
	for(int i=1;i<=n;i++)
		for(int j=i+1;j<=n;j++)
			if(check(i,j))
				cnt++;
	cout<<cnt*2;
	return 0;
}