from math import gcd

n = int(input())
A = [int(input()) for _ in range(n)]
ans = 0
for i in range(n):
    for j in range(i + 1, n):
        for k in range(j + 1, n):
            if gcd(A[i], gcd(A[j], A[k])) == 1:
                ans += 1
print(ans)