import sys; input = sys.stdin.buffer.readline
sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 10 ** 9 + 7; INF = float("inf")
from math import gcd

def getlist():
	return list(map(int, input().split()))

# def gcd(a, b):
# 	while b != 0:
# 		a, b = b, a % b
# 	return a


#処理内容
def main():
	N = int(input())
	A = []
	for i in range(N):
		a = int(input())
		A.append(a)

	ans = 0
	for i in range(N):
		for j in range(i + 1, N):
			for k in range(j + 1, N):
				val = gcd(gcd(A[i], A[j]), A[k])
				if val == 1:
					ans += 1

	print(ans)

if __name__ == '__main__':
	main()