#include<bits/stdc++.h>

#define ll long long
#define fornum(A,B,C) for(A=B;A<C;++A)
#define pii pair<int,int>
#define pll pair<ll,ll>

using namespace std;

/////////////////////////////////////////////////////

ll N;
ll A[303030];
ll dp[303030];
vector<ll> ps[303030];
ll mk[303030];
ll i, j, k,ans;


int main(){
    scanf("%lld", &N);
    fornum(i,0,N){
        scanf("%lld", &A[i]);
    }

    fornum(i,1,300001){
        for (j = i * 2; j <= 300000;j+=i)
        {
            ps[j].push_back(i);
            mk[j] = 1;
        }
    }
    
    for (i = N - 1; i >= 0;--i)
    {
        ans = max(ans, dp[A[i]] + 1ll);
        fornum(j,0,ps[A[i]].size()){
            ll b = ps[A[i]][j];
            dp[b] = max(dp[b], dp[A[i]] + 1ll);
        }
    }
    printf("%lld", ans);
    return 0;
}