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 A038081 #18 Feb 16 2025 08:32:37 %S A038081 1,1,2,12,65520 %N A038081 Number of rooted identity trees of height n. Sets of rank n. %C A038081 Next term is 2^65536 - 65536. %H A038081 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Rank.html">Rank.</a> %H A038081 <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a> %Y A038081 Cf. A004111, A038082-A038093, A048828. %Y A038081 Differences of A014221. %Y A038081 Column sums of A227819. %K A038081 nonn,easy %O A038081 0,3 %A A038081 _Christian G. Bower_, Jan 04 1999