#include <fstream>

using namespace std;

ifstream fin("indep.in");
ofstream fout("indep.out");

int n, v[505], cnt, x[505];

int gcd(int a, int b) {
    while(b != 0) {
        int r = a % b;
        a = b;
        b = r;
    }
    return a;
}

bool valid(int k) {
    if(k == 1) {
        return false;
    }
    int cmmdc = gcd(v[x[1]], v[x[2]]);
    for(int i = 3; i <= k; i++) {
        cmmdc = gcd(cmmdc, v[x[k]]);
    }
    return (cmmdc == 1);
}

void back(int k) {
    for(int i = x[k - 1] + 1; i <= n; i++) {
        x[k] = i;
        if(valid(k)) {
            cnt++;
        }
        if(k < n) {
            back(k + 1);
        }
    }
}

int main() {
    fin >> n;
    for(int i = 1; i <= n; i++) {
        fin >> v[i];
    }
    back(1);
    fout << cnt;
    return 0;
}