import math
import sys
def S(): return sys.stdin.readline().rstrip()
def I(): return int(sys.stdin.readline().rstrip())
def MI(): return map(int, sys.stdin.readline().rstrip().split())
def LI(): return list(map(int, sys.stdin.readline().rstrip().split()))
def LS(): return list(sys.stdin.readline().rstrip().split())

n = I()
a = []
for i in range(n):
    a.append(I())
ans = 0
for i in range(n-2):
    for j in range(i+1, n-1):
        for k in range(j+1, n):
            if math.gcd(a[i], a[j], a[k]) == 1:
                ans += 1

print(ans)