import math

n = int(input())
a = list(map(int, input().split()))

m = 10 ** 5
dp = [0 for _ in range(n)]
idx = [None for _ in range(m + 1)]
for i in range(n):
  for x in range(1, int(math.sqrt(a[i])) + 1):
    if a[i] % x == 0:
      if not idx[x] is None:
        dp[i] = max(dp[i], dp[idx[x]] + 1)
      if x != a[i] // x and not idx[a[i] // x] is None:
        dp[i] = max(dp[i], dp[idx[a[i] // x]] + 1)

  dp[i] = max(dp[i], 1)
  idx[a[i]] = i

print(max(dp))