import math
N = int(input())
A = []
for i in range(N):
    A.append(int(input()))
ans = 0
for i in range(N):
    for j in range(i+1,N):
        for k in range(j+1,N):
            ans += math.gcd(math.gcd(A[i],A[k]),A[j])==1
print(ans)