#include <bits/stdc++.h>
using namespace std;
long long arr[300000];
long long temp[300000];
int main() {
  int q;
  cin >> q;
  while (q--) {
    int n;
    cin >> n;
    for (int i = 0; i < n; i++) {
      cin >> arr[i];
      temp[i] = arr[i];
    }
    int st = 0;
    int endIdx1 = -1;
    for (int i = 0; i < n; i++) {
      if (arr[i] >= st) {
        st++;
        endIdx1 = i;
      } else {
        break;
      }
    }
    if (endIdx1 == n - 1) {
      cout << "Yes" << endl;
      continue;
    }
    st = 0;
    int endIdx = n;
    for (int i = n - 1; i >= 0; i--) {
      if (arr[i] >= st) {
        st++;
        endIdx = i;
      } else {
        break;
      }
    }
    if (endIdx == 0) {
      cout << "Yes" << endl;
      continue;
    }
    if (endIdx1 >= endIdx) {
      cout << "Yes" << endl;
    } else {
      cout << "No" << endl;
    }
  }
  return 0;
}
