#include <bits/stdc++.h>
#define int long long
#define double long double
using namespace std;
const int MOD = 1000000007;
const int INF = 1e14;
using Graph = vector<vector<int>>;

int gcd(int a, int b){
	if(!a) return b;
	return gcd(b%a,a);
}

signed main(){
  int N;
  cin >> N;
  vector<int> A(N);
  for( int i = 0; i < N; i++ ) cin >> A[i];

  int ans = 0;
  for( int a = 0; a < N; a++ ){
    for( int b = a+1; b < N; b++ ){
      for( int c = b+1; c < N; c++){
        if( gcd(gcd(A[a], A[b]), A[c]) == 1 ) ans++;
      }
    }
  }
  cout << ans << endl;
}