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 A055337 #7 Mar 30 2012 17:37:10 %S A055337 6,25,90,244,591,1273,2566,4822,8654,14836,24566,39352,61389,93357, %T A055337 139008,202865,290976,410584,571094,783583,1062145,1423226,1887252, %U A055337 2477916,3224154,4159173,5323025,6761359,8528427,10685767,13305718 %N A055337 Number of asymmetric (identity) trees with n nodes and 6 leaves. %H A055337 <a href="/index/Tra#trees">Index entries for sequences related to trees</a> %Y A055337 Column 6 of A055334. %K A055337 nonn %O A055337 13,1 %A A055337 _Christian G. Bower_, May 12 2000