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 A023638 #6 Jul 08 2025 17:19:56 %S A023638 1,2,16,38,149,109,2064,466 %N A023638 Vertex-transitive graphs of valency 11 with 2n nodes. %D A023638 CRC Handbook of Combinatorial Designs, 1996, p. 649. %K A023638 nonn %O A023638 6,2 %A A023638 _N. J. A. Sloane_