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 A008711 #8 Jul 08 2025 01:20:23 %S A008711 10,11,12,13,14,15,16,20,22,24,32,112,1110,11111111111111 %N A008711 14 in base 14-n. %K A008711 fini,nonn,base,full %O A008711 0,1 %A A008711 _N. J. A. Sloane_