#include<iostream>
#include<vector>
#include<numeric>
using namespace std;
int main() {
	int n;
	cin >> n;
	vector<int> a;
	for (int i = 0; i < n; i++) {
		int t;
		cin >> t;
		a.push_back(t);
	}
	int c = 0;
	for (int i = 0; i < n; i++)
		for (int j = 0; j < i; j++)
			for (int k = 0; k < j; k++)
				if (gcd(gcd(a[i], a[j]), a[k]) == 1)
					c++;
	cout << c << endl;
	return 0;
}