import sys

inputs = sys.stdin.readline

"""再帰関数のときセット
sys.setrecursionlimit(10**7)
import pypyjit
pypyjit.set_param('max_unroll_recursion=-1')
"""


def f(x):
    ret = set()
    for i in range(1, x + 1):
        if i * i > x:
            break
        if x % i == 0:
            ret.add(i)
            ret.add(x // i)
    return ret


def main():
    N = int(inputs())
    A = list(map(int, inputs().split()))

    R = [0] * (10 ** 5 + 1)
    for a in A:
        se = f(a)
        max_val = 0
        for el in se:
            max_val = max(max_val, R[el] + 1)
        R[a] = max_val

    print(max(R))


if __name__ == '__main__':
    main()