#include <iostream>
#include <string>
#include <vector>
#include <queue>
#include <deque>
#include <algorithm>
#include <set>
#include <map>
#include <bitset>
#include <cmath>
#include <functional>
#include <iomanip>
#define vll vector<ll>
#define vvvl vector<vvl>
#define vvl vector<vector<ll>>
#define VV(a, b, c, d) vector<vector<d>>(a, vector<d>(b, c))
#define VVV(a, b, c, d) vector<vvl>(a, vvl(b, vll (c, d)));
#define re(c, b) for(ll c=0;c<b;c++)
#define all(obj) (obj).begin(), (obj).end()
typedef long long int ll;
typedef long double ld;
using namespace std;

ll gcd(ll _a, ll _b) {
  unsigned long long a = abs(_a), b = abs(_b);
  if(a == 0) return b;
  if(b == 0) return a;
  int shift = __builtin_ctzll(a | b);
  a >>= __builtin_ctzll(a);
  do {
    b >>= __builtin_ctzll(b);
    if(a > b) std::swap(a, b);
    b -= a;
  }while(b);
  return (a << shift);
}
int main(int argc, char const *argv[]) {
  ll n;std::cin >> n;
  vll a(n);re(i, n) std::cin >> a[i];
  ll cnt = 0;
  for(int i=0;i<n;i++){
    for(int j=i+1;j<n;j++){
      for(int k=j+1;k<n;k++){
        ll g = gcd(a[i], gcd(a[j], a[k]));
        if(g==1) cnt++;
      }
    }
  }
  std::cout << cnt << '\n';
  return 0;
}