/**
 *   @FileName	a.cpp
 *   @Author	kanpurin
 *   @Created	2020.08.06 15:19:09
**/

#include "bits/stdc++.h" 
using namespace std; 
typedef long long ll;


template<typename T>
T gcd(T a, T b) {
    return b ? gcd(b, a%b) : a;
}
int main() {
    int n;cin >> n;
    vector<int> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    ll ans = 0;
    for (int i = 0; i < n-2; i++) {
        for (int j = i+1; j < n-1; j++) {
            for (int k = j+1; k < n; k++) {
                int g = gcd(a[i],gcd(a[j],a[k]));
                if (g == 1) ans++;
            }
        }
    }
    cout << ans << endl;
    return 0;
}