import sys
readline=sys.stdin.readline
write=sys.stdout.write
from math import gcd as GCD
import math

N=int(readline())
A=[int(readline()) for n in range(N)]
se=set()
for i in range(N):
    for j in range(i+1,N):
        for k in range(j+1,N):
            if GCD(A[i],A[j],A[k])==1:
                se.add(tuple(sorted([A[i],A[j],A[k]])))
ans=len(se)
print(ans)