import math
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 math.gcd(A[i], A[j], A[k]) == 1:
                ans += 1
print(ans)