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 A261188 #11 Apr 25 2020 03:18:51 %S A261188 1,2,4,5,7,8,11,14,17,22,25,28,41,44,47,52,55,58,71,74,77,82,85,88 %N A261188 Integers such that no subsequence of decimal representation is divisible by 3. %Y A261188 Cf. A114922. %K A261188 nonn,base,fini,full %O A261188 1,2 %A A261188 _Zak Seidov_, Aug 11 2015