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 A092752 #6 Jan 21 2019 19:01:55 %S A092752 1,2,4,5,8,30,1000,2000,4000,5000,8000,30000,1000000,1000000000000 %N A092752 Numbers which in Portuguese contain no e. %e A092752 1 = um %e A092752 2 = dois %e A092752 4 = quatro %e A092752 5 = cinco %e A092752 8 = oito %e A092752 30 = trinta %Y A092752 Cf. A006933. %K A092752 nonn,word,easy %O A092752 1,2 %A A092752 _Jorge Coveiro_, Apr 12 2004