#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int INF = 1e9;
const ll LINF = 1e18;
template<class S,class T> ostream& operator << (ostream& out,const pair<S,T>& o){ out << "(" << o.first << "," << o.second << ")"; return out; }
template<class T> ostream& operator << (ostream& out,const vector<T>& V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " ";} return out; }
template<class T> ostream& operator << (ostream& out,const vector<vector<T> >& Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out << Mat[i];} return out; }
template<class S,class T> ostream& operator << (ostream& out,const map<S,T>& mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out << it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; }
template<typename T>vector<T> make_v(size_t a){return vector<T>(a);}
template<typename T,typename... Ts>auto make_v(size_t a,Ts... ts){return vector<decltype(make_v<T>(ts...))>(a,make_v<T>(ts...));}
template<typename T,typename V> typename enable_if<is_class<T>::value==0>::type fill_v(T &t,const V &v){t=v;}
template<typename T,typename V> typename enable_if<is_class<T>::value!=0>::type fill_v(T &t,const V &v){for(auto &e:t) fill_v(e,v);}
/*
 <url:>
 問題文============================================================
 =================================================================
 解説=============================================================
 ================================================================
 */

// nの約数を列挙する
vector<ll> getdivisor(ll n){
    vector<ll> res;
    for(ll i = 1; i*i <= n;i++){
        if(n%i == 0) {
            res.push_back(i);
            if(n/i != i) res.push_back(n/i);
        }
    }
    sort(res.begin(),res.end());
    return res;
}

ll Cnt[333333];
template<class Type>
Type solve(Type res = Type()){
    ll N; cin >> N;
    vector<ll> A(N); for(auto& in:A) cin >> in;

//    vector<vector<ll>> Divisors(N);
//    for(int i = 0; i < N;i++){
//        Divisors[i] = getdivisor(A[i]);
//    }
    
    for(int i = 0; i < N;i++){
        if(A[i] == 1){
            Cnt[1] = 1;
            res = max(res,1LL);
            continue;
        }
        auto divisor = getdivisor(A[i]);
        ll& ref = Cnt[A[i]];
        for(int j = 0; j < divisor.size()-1; j++){
            ref = max(ref,Cnt[divisor[j]]+1);
        }
        
        res = max(res,ref);
    }

    return res;
}
int main(void) {
    cin.tie(0); ios::sync_with_stdio(false);
    //solve<ll>(0);
    cout << fixed << setprecision(12) << solve<ll>() << endl;
    return 0;
}