import math

n = int(input())

A = [int(input()) for _ in range(n)]

p = []
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:
                p.append((A[i], A[j], A[k]))

print(len(p))