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 A337269 #8 Aug 27 2020 01:53:56 %S A337269 1,9,95,1195,17251,266331,4216075,67130923,1072424939 %N A337269 A335703(4n). %C A337269 In theory this should be easier to analyze than A335703, since the construction follows a cycle of four steps. %Y A337269 Cf. A328078, A335703, A337267, A337268. %K A337269 nonn,more %O A337269 0,2 %A A337269 _Rémy Sigrist_ and _N. J. A. Sloane_, Aug 26 2020