#include <bits/stdc++.h>
long long int mod = 998244353;
using namespace std;
void solve() {
  int n, d;
  cin >> n >> d;
  int ld = 0, rd = n * (n - 1) / 2;
  for (int i = 1, cd = 0; i <= n; ++i) {
    if (!(i & (i - 1))) ++cd;
    ld += cd - 1;
  }
  if (!(ld <= d && d <= rd)) {
    cout << "NO" << endl;
    return;
  }
  vector<int> par(n);
  iota(par.begin(), par.end(), -1);
  vector<int> cnt(n, 1);
  cnt[n - 1] = 0;
  vector<int> bad(n);
  vector<int> dep(n);
  iota(dep.begin(), dep.end(), 0);
  int cur = n * (n - 1) / 2;
  while (cur > d) {
    int v = -1;
    for (int i = 0; i < n; ++i) {
      if (!bad[i] && cnt[i] == 0 && (v == -1 || dep[v] > dep[i])) {
        v = i;
      }
    }
    assert(v != -1);
    int p = -1;
    for (int i = 0; i < n; ++i) {
      if (cnt[i] < 2 && dep[i] < dep[v] - 1 && (p == -1 || dep[p] < dep[i])) {
        p = i;
      }
    }
    if (p == -1) {
      bad[v] = 1;
      continue;
    }
    assert(dep[v] - dep[p] == 2);
    --cnt[par[v]];
    --dep[v];
    ++cnt[p];
    par[v] = p;
    --cur;
  }
  cout << "YES" << endl;
  for (int i = 1; i < n; ++i) cout << par[i] + 1 << " ";
  cout << endl;
}
int main() {
  long long int i, j, k, t;
  cin >> t;
  while (t--) solve();
}
