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 A032850 #9 Feb 12 2021 20:53:16
%S A032850 1,2,4,5,8,12,13,15,16,17,24,25,26,36,37,38,40,41,45,46,47,49,50,53,
%T A032850 72,73,74,76,77,80,108,111,112,114,115,116,120,121,123,124,125,135,
%U A032850 138,139,141,142,143,147,148,150,151,152,159,160
%N A032850 Numbers whose base-3 representation Sum_{i=0..m} d(i)*3^i has d(m) <= d(m-1) >= d(m-2) <= ...
%K A032850 nonn,base
%O A032850 1,2
%A A032850 _Clark Kimberling_