import math
N = int(input())
A = [int(input()) for _ in range(N)]
cnt = 0
for i in range(N):
    for j in range(i+1, N):
        g = math.gcd(A[i], A[j])
        for k in range(j+1, N):
            g2 = math.gcd(g, A[k])
            if g2==1:
                cnt+=1
print(cnt)