#include <bits/stdc++.h>

using namespace std;
using LL = long long;

const int MAXN = 1e5 + 3;

int n;
int a[MAXN];
int dp[MAXN];
vector<int> s[MAXN];

int main(){
  cin >> n;
  for(int i = 1; i <= n; i++){
    cin >> a[i];
    s[a[i]].push_back(i);
  }
  int ans = 0;
  for(int i = n; i >= 1; i--){
    s[a[i]].pop_back();
    dp[i] = max(dp[i], 1);
    for(int j = 1; j * j <= a[i]; j++){
      if(a[i] % j == 0){
        for(int id : s[j]){
          dp[id] = max(dp[id], dp[i] + 1);
        }
        for(int id : s[a[i] / j]){
          dp[id] = max(dp[id], dp[i] + 1);
        }
      }
    }
    ans = max(ans, dp[i]);
  }
  cout << ans;
  return 0;
}