#include <bits/stdc++.h>
#define ll long long
using namespace std;

ifstream f("indep.in");
ofstream g("indep.out");
ll pd[550], n, v[550];
ll cmmdc(ll a, ll b)
{
    ll r;
    while(b)
    {
        r = a % b;
        a = b;
        b = r;
    }
    return a;
}
int main()
{
    f >> n;
    for(int i = 1; i <= n; ++i)
    {
        f >> v[i];
        pd[i] = 1;
    }
    for(int i = 1; i <= n; ++i)
        for(int j = i - 1; j >= 1; --j)
            if(cmmdc(i,j) == 1)
            pd[i] += pd[j];
    g << pd[n];
    f.close();
    g.close();
    return 0;
}