package main

import (
	"bufio"
	"fmt"
	"os"
	"sort"
	"strconv"
)

var sc = bufio.NewScanner(os.Stdin)
var out = bufio.NewWriter(os.Stdout)

func main() {
	//bufサイズ以上の文字列入力が必要な場合は拡張すること
	buf := make([]byte, 9*1024*1024)
	sc.Buffer(buf, bufio.MaxScanTokenSize)
	sc.Split(bufio.ScanWords)

	n := nextInt()
	a := nextIntSlice(n)
	ans := solve(n, a)
	PrintInt(ans)
}

func divide(x int) []int {
	m := make(map[int]struct{})
	for i := 1; i*i <= x; i++ {
		if x%i == 0 {
			m[i] = struct{}{}
			m[x/i] = struct{}{}
		}
	}
	var res []int
	for k := range m {
		res = append(res, k)
	}
	sort.Ints(res)
	return res

}
func solve(n int, a []int) int {
	dp := make(map[int]int)
	dp[0] = 0
	for i := 1; i <= n; i++ {
		next := make(map[int]int)
		for k := range dp {
			next[k] = dp[k]
		}
		d := divide(a[i-1])
		d = append([]int{0}, d...)
		for _, v := range d {
			if _, found := dp[v]; found {
				next[a[i-1]] = Max(next[a[i-1]], dp[v]+1)
			}
		}
		dp = next
	}
	var ans int
	for _, v := range dp {
		ans = Max(ans, v)
	}
	return ans
}

func nextInt() int {
	sc.Scan()
	i, _ := strconv.Atoi(sc.Text())
	return int(i)
}

func nextIntSlice(n int) []int {
	s := make([]int, n)
	for i := range s {
		s[i] = nextInt()
	}
	return s
}

func PrintInt(x int) {
	defer out.Flush()
	fmt.Fprintln(out, x)
}

func Min(x, y int) int {
	if x < y {
		return x
	}
	return y
}

func Max(x, y int) int {
	if x < y {
		return y
	}
	return x
}