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 A044955 #7 Feb 23 2022 12:59:15
%S A044955 1,2,3,4,5,7,14,21,28,35,36,37,42,43,44,45,46,47,49,50,55,57,61,64,67,
%T A044955 71,72,74,79,80,84,85,86,87,88,89,92,93,98,100,104,107,108,111,115,
%U A044955 117,122,123,126,127,128,129,130,131,135,136,141
%N A044955 Numbers with no two equally numerous base 6 digits.
%t A044955 en6Q[n_]:=Module[{d6=DeleteCases[DigitCount[n,6],0]},Length[d6] == Length[ Union[ d6]]]; Select[Range[150],en6Q] (* _Harvey P. Dale_, Feb 23 2022 *)
%K A044955 nonn,base
%O A044955 1,2
%A A044955 _Clark Kimberling_