from math import gcd

n = int(input())
A = [0] * n
for i in range(n):
    A[i] = int(input())
    
ans = 0
for a in range(n):
    for b in range(a + 1, n):
        for c in range(b + 1, n):
            if gcd(gcd(A[a], A[b], A[c])) == 1:
                ans += 1
                
print(ans)