#include <bits/stdc++.h>

using namespace std;

using ll = long long;

ll gcd(ll a, ll b)
{
    return b == 0 ? a : gcd(b, a % b);
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n;
    cin >> n;

    vector<ll> va(n);
    for (auto&& iv : va)
        cin >> iv;
    int res{ 0 };

    for (int i = 0; i < n - 2; ++i)
    {
        for (int j = i + 1; j < n - 1; ++j)
        {
            ll g = gcd(va[i], va[j]);
            for (int k = j + 1; k < n; ++k)
            {
                if (gcd(g, va[k]) == 1)
                    ++res;
            }
        }
    }
    cout << res << "\n";

    return 0;
}