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

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

ans = 0
X = [0] * (Z + 1)
for a in A:
    M = 0
    for d in D[a]:
        if d == a:
            continue
        M = max(M, X[d])
    M += 1
    ans = max(ans, M)
    X[a] = M

print(ans)