U = 3 * 10 ** 5

div = [[0] for _ in range(U + 1)]
for i in range(1, U + 1):
    v = i * 2
    while v <= U:
        div[v].append(i)
        v += i

memo = [0] * (U + 1)


n = int(input())
ans = 0
for a in map(int, input().split()):
    v = max(memo[i] for i in div[a]) + 1
    if v > ans:
        ans = v
    memo[a] = v

print(ans)