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 A023642 #6 Jul 08 2025 17:20:08 %S A023642 1,2,11,9,48,45,115,52,652,117 %N A023642 Vertex-transitive graphs of valency 7 with 2n nodes. %D A023642 CRC Handbook of Combinatorial Designs, 1996, p. 649. %K A023642 nonn %O A023642 4,2 %A A023642 _N. J. A. Sloane_