from itertools import combinations


def gcd(*numbers: int) -> int:
    if len(numbers) == 1:
        return numbers[0]
    if len(numbers) == 2:
        a, b = numbers
        if a < b:
            a, b = b, a

        while True:

            if a % b == 0:
                return b
            a, b = b, a % b

    first_gcd = gcd(*numbers[:2])
    return gcd(first_gcd, *numbers[2:])


def main():
    dogu = []
    N = int(input())
    for _ in range(N):
        dogu.append(int(input()))

    ctr = 0
    for dogu1, dogu2, dogu3 in combinations(dogu, 3):
        if gcd(dogu1, dogu2, dogu3) == 1:
            ctr += 1

    print(ctr)


if __name__ == "__main__":
    main()