#include<stdio.h>
int gcd(int a, int b)
{
	int r = a % b;
	while (r > 0)
	{
		a = b;
		b = r;
		r = a % b;
	}
	return b;
}
int main()
{
	int n;
	scanf("%d", &n);
	int a[102];
	int i, j, k;
	for (i = 0; i < n; i++)
		scanf("%d", &a[i]);
	int ans = 0;
	for (i = 0; i < n; i++)
		for (j = i + 1; j < n; j++)
			for (k = j + 1; k < n; k++)
				if (gcd(a[i], gcd(a[j], a[k])) == 1)
					ans++;
	printf("%d\n", ans);
	return 0;
}