user
Task
:   Find numbers in base 10 that are palindromic in bases 2, 4, and 16, where **n < 25,000**
assistant
```
put "{+$_} such numbers:\n", .batch(10)».fmt('%5d').join("\n") given
(^25000).grep: -> $n { all (2,4,16).map: { $n.base($_) eq $n.base($_).flip } }

```

Output:

```
23 such numbers:
    0     1     3     5    15    17    51    85   255   257
  273   771   819  1285  1365  3855  4095  4097  4369 12291
13107 20485 21845
```