This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A044963 #7 Aug 28 2019 10:49:26
%S A044963 1,2,3,4,5,6,7,8,9,10,11,12,13,15,30,45,60,75,90,105,120,135,150,165,
%T A044963 180,195,196,197,210,211,212,213,214,215,216,217,218,219,220,221,222,
%U A044963 223,225,226,239,241,253,256,267,271,281,286
%N A044963 Numbers with no two equally numerous base 14 digits.
%t A044963 ten14Q[n_]:=Module[{t=Tally[IntegerDigits[n,14]][[All,2]]},Length[t] == Length[ Union[t]]]; Select[Range[300],ten14Q] (* _Harvey P. Dale_, Aug 28 2019 *)
%K A044963 nonn,base
%O A044963 1,2
%A A044963 _Clark Kimberling_