#include <algorithm>
#include <cassert>
#include <numeric>
#include <utility>
#include <iostream>
#include <vector>

namespace nono {

class EratosthenesSieve {
  public:
    EratosthenesSieve(const int n) : n_(n), sieve_(n + 1) {
        std::iota(sieve_.begin(), sieve_.end(), 0);
        sieve_[0] = -1;
        sieve_[1] = -1;
        for (long long i = 2; i * i <= n_; ++i) {
            if (sieve_[i] == i) {
                for (long long j = i * i; j <= n_; j += i) {
                    if (sieve_[j] == j) {
                        sieve_[j] = i;
                    }
                }
            }
        }
    }

    std::vector<int> enumerate_primes() const {
        std::vector<int> primes;
        for (int i = 2; i <= n_; i++) {
            if (sieve_[i] == i) {
                primes.push_back(i);
            }
        }
        return primes;
    }

    bool is_prime(const int v) const {
        return sieve_[v] == v;
    }

    std::vector<std::pair<int, int>> factorize(long long v) const {
        std::vector<std::pair<int, int>> factor;
        while (v > 1) {
            int count = 0;
            int prime = sieve_[v];
            while (prime == sieve_[v]) {
                count++;
                v /= sieve_[v];
            }
            factor.emplace_back(prime, count);
        }
        return factor;
    }

    std::vector<int> enumerate_divisors(int v) const {
        std::vector<int> divisors;
        const std::vector<std::pair<int, int>> factors = factorize(v);

        auto dfs = [&](auto self, const int i, int value) {
            if (i == factors.size()) {
                divisors.push_back(value);
                return;
            }
            for (int j = 0; j <= factors[i].second; j++) {
                self(self, i + 1, value);
                value *= factors[i].first;
            }
        };

        dfs(dfs, 0, 1);
        return divisors;
    }

    int operator[](const int v) const {
        return sieve_[v];
    }

  private:
    const int n_;
    std::vector<int> sieve_;
};

} // namespace nono

int main() {
    const int MAX = 1e5;
    nono::EratosthenesSieve sieve(MAX);
    int n;
    std::cin >> n;
    std::vector<int> a(n);
    for (int i = 0; i < n; i++) {
        std::cin >> a[i];
    }
    std::vector<int> max(MAX + 1);
    for (int i = n - 1; i >= 0; i--) {
        int ans = max[a[i]] + 1;
        for (const int divisor: sieve.enumerate_divisors(a[i])) {
            max[divisor] = std::max(max[divisor], ans);
        }
    }
    std::cout << max[1] << '\n';
}