n = int(input())
a = [int(input()) for i in range(n)]
ans = 0
from math import gcd
for i in range(n):
    for j in range(i + 1, n):
        for k in range(j + 1, n):
            if gcd(a[i], a[j], a[k]) == 1:
                ans += 1
print(ans)