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 A032876 #9 Feb 12 2021 21:35:43
%S A032876 1,2,3,4,7,8,9,13,14,19,26,27,28,29,51,52,53,54,57,58,59,76,77,78,79,
%T A032876 82,83,84,88,89,101,102,103,104,107,108,109,113,114,119,176,177,178,
%U A032876 179,182,183,184,201,202,203,204,207,208,209,213
%N A032876 Numbers whose base-5 representation Sum_{i=0..m} d(i)*5^i has d(0) > d(1) < d(2) > ...
%K A032876 nonn,base
%O A032876 1,2
%A A032876 _Clark Kimberling_