# coding: utf-8
# Your code here!

import sys
readline = sys.stdin.readline
read = sys.stdin.read

n,*a = [int(i) for i in read().split()]

MAX = 1+3*10**5
#MAX = 20
ans = [1]*n
d = {}
for i,ai in enumerate(a):
    if ai in d:
        d[ai].append(i)
    else:
        d[ai] = [i]

from bisect import bisect_left
from itertools import groupby
for k in range(1,MAX):
    if k not in d: continue
    dk = d[k]
    v = [ans[i] for i in dk]
    l = len(v)
    for i in range(1,l):
        if v[i] < v[i-1]: v[i] = v[i-1]

    #print(k,c)
    for p in range(2*k,MAX,k):
        if p in d:
            for j in d[p]:
                idx = bisect_left(dk,j)
                #print(k,p,idx,j,ans)
                if idx >= 1: 
                    ans[j] = max(ans[j],v[idx-1]+1)
    
    #print(ans)
    
print(max(ans))