import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int n = Integer.parseInt(br.readLine());
        int[] map = new int[300001];
        int ans = 1;
        String[] line = br.readLine().split(" ", n);
        for (int i = 0; i < n; i++) {
            int max = 0;
            int x = Integer.parseInt(line[i]);
            if (x != 1) {
                max = map[1];
            }
            for (int j = 2; j <= Math.sqrt(x); j++) {
                if (x % j == 0) {
                    max = Math.max(max, map[j]);
                    max = Math.max(max, map[x / j]);
                }
            }
            map[x] = max + 1;
            ans = Math.max(ans, max + 1);
        }
        System.out.println(ans);
    }
}