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 A023644 #6 Jul 08 2025 17:20:13 %S A023644 1,4,6,40,54,168,94,1473,286 %N A023644 Vertex-transitive graphs of valency 9 with 2n nodes. %D A023644 CRC Handbook of Combinatorial Designs, 1996, p. 649. %K A023644 nonn %O A023644 5,2 %A A023644 _N. J. A. Sloane_