#include <bits/stdc++.h>
using namespace std;
/* typedef */
typedef long long ll;
typedef pair<int, int> pii;
/* constant */
const int INF = 1 << 30;
const ll LINF = 1LL << 50;
const int NIL = -1;
const int MAX = 10000;
const int mod = 1000000007;
const double pi = 3.141592653589;
/* global variables */
/* function */
/* main */
int main(){
    int N;
    cin >> N;
    vector<ll> a(N+1);
    for (int i = 1; i <= N; i++) cin >> a[i];

    // a[i] > i -> fault
    for (int i = 0; i <= N; i++) {
        if (a[i] > i) {
            cout << "No" << '\n';
            return 0;
        }
    }

    ll cum = 0;
    for (ll i = N; i > 1; i--) {
        a[i] += cum;
        if (a[i] % i != 0) {
            cout << "No" << '\n';
            return 0;
        }
        cum += a[i] / i;
    }
    cout << "Yes" << '\n';
}