import math
ans=0
L=list()
N=int(input())
for i in range(N):
    s=int(input())
    L.append(s)
for i in range(N-2):
    for j in range(i+1,N-1):
        for k in range(j+1,N):
            if math.gcd(math.gcd(L[i],L[j]),L[k])==1:
                ans+=1
print(ans)