class PrimeNumbers:
    def __init__(self,nmax):
        rootnmax = isqrt(nmax)
        self.prime_judgement = [True]*(rootnmax+1)
        self.prime_judgement[0] = self.prime_judgement[1] = False
        for i in range(2,rootnmax+1):
            if self.prime_judgement[i]:
                for j in range(2,rootnmax//i+1):
                    self.prime_judgement[i*j] = False
        self.prime_list = []
        for i,flag in enumerate(self.prime_judgement):
            if flag: self.prime_list.append(i)
    def prime_factorization(self,n):
        return_list = []
        for i in self.prime_list:
            if n==1 or i*i>n: break
            if n%i==0:
                return_list.append([i,0])
                while n%i==0: return_list[-1][1] += 1; n //= i
        if n!=1: return_list.append([n,1])
        return return_list
    def divisors_enumeration(self,n):
        divisors = [1]
        for p,v in self.prime_factorization(n):
            for i in range(len(divisors)):
                for j in range(v): divisors.append(divisors[i]*p**(j+1))
        return divisors
def isqrt(n):
    m = int(n**0.5)
    if m**2>n: m -= 1
    return m
n = int(input())
dp = [0]*(10**5+1)
pn = PrimeNumbers(10**5)
for v in map(int,input().split()):
    m = 0
    for d in pn.divisors_enumeration(v): m = max(m,dp[d])
    dp[v] = max(dp[v],m+1)
print(max(dp))