N = int(input())
A = list(map(int, input().split()))

Z = 3*10**5
D = [[] for _ in range(Z+1)]
for i in range(1, Z+1):
    for j in range(i+i, Z+1, i):
        D[j].append(i)
D[1].append(0)

dp = [0] * (Z+1)
for a in A:
    t = 0
    for d in D[a]:
        t = max(t, dp[d])
    dp[a] = max(dp[a], t + 1)
    
ans = max(dp)
print(ans)