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 A035355 #8 Dec 19 2015 09:46:48 %S A035355 1,1,1,2,5,15,44,140,442,1443,4751,15903,53716,183334,630513,2184417, %T A035355 7614318,26690344,94015908,332639104,1181596784,4212424485, %U A035355 15066677338,54050993664,194438337125,701224890628,2534810109024 %N A035355 "BHK" (reversible, identity, unlabeled) transform of A035353. %H A035355 C. G. Bower, <a href="/transforms2.html">Transforms (2)</a> %Y A035355 Cf. A000083, A000237, A000314, A035082, A035349-A035357. %K A035355 nonn %O A035355 0,4 %A A035355 _Christian G. Bower_, Nov 15 1998