import math

n = int(input())

A = [int(input()) for i 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 math.gcd(A[i], A[j], A[k]) == 1:
                ans += 1

print(ans)