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 A030234 #11 Feb 16 2025 08:32:35 %S A030234 1,2,4,10,22,57,131,344,810,2144,5127,13645,32984,88133,214768,575578, %T A030234 1411442 %N A030234 Number of n-celled polyplets having bilateral symmetry. %H A030234 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Polyplet.html">Polyplet.</a> %Y A030234 Cf. A030222. %K A030234 nonn,hard %O A030234 1,2 %A A030234 _David W. Wilson_ %E A030234 More terms from _Joseph Myers_, Sep 26 2002