#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef unsigned long long ull;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll myRand(ll B) {
    return (ull)rng() % B;
}

long long binary_gcd(long long a, long long b) {
    if (a == 0) return b;
    if (b == 0) return a;
    const int n = __builtin_ctzll(a | b);
    a >>= __builtin_ctzll(a);
    while (b > 0) {
        b >>= __builtin_ctzll(b);
        if (a > b) swap(a, b);
        b -= a;
    }
    return a << n;
}

template<class S, S (*op)(S, S), S (*e)()> struct swag {
    std::stack<std::pair<S, S>> front_stack, back_stack;
    swag() {
        front_stack.emplace(e(), e());
        back_stack.emplace(e(), e());
    }
    bool empty() const { return front_stack.size() == 1 && back_stack.size() == 1; }
    size_t size() const { return front_stack.size() + back_stack.size() - 2; }
    S fold() const { return op(front_stack.top().second, back_stack.top().second); }
    void push(const S& x) { back_stack.emplace(x, op(back_stack.top().second, x)); }
    void pop() {
        assert(front_stack.size() > 1 || back_stack.size() > 1);
        if (front_stack.size() > 1) {
            front_stack.pop();
        } else {
            while (back_stack.size() > 2) {
                front_stack.emplace(back_stack.top().first, op(front_stack.top().second, back_stack.top().first));
                back_stack.pop();
            }
            back_stack.pop();
        }
    }
};

long long e() { return 0; }

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int n; cin >> n;
    vector<ll> a(n);
    for(int i=0;i<n;i++){
        cin >> a[i];
    }
    ll res=0;
    a.push_back(1);
    swag<ll, binary_gcd, e> q;
    for (int l = 0, r = 0; l < n; ++l) {
        while(r <= n and q.fold() != 1) {
            q.push(a[r]);
            r++;
        }
        if(r <= n) res += n-(r-1);
        q.pop();
    }
    printf("%lld\n",res);
}