Numbers in base 10 that are palindromic in bases 2 4 and 16

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
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