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 A055338 #7 Mar 30 2012 17:37:10 %S A055338 1,13,69,276,868,2380,5822,13110,27509,54583,103126,187035,327121, %T A055338 554450,913611,1468364,2307096,3551916,5367406,7974550,11664238, %U A055338 16817964,23927818,33626390,46715627,64208789,87371118,117777552 %N A055338 Number of asymmetric (identity) trees with n nodes and 7 leaves. %H A055338 <a href="/index/Tra#trees">Index entries for sequences related to trees</a> %Y A055338 Column 7 of A055334. %K A055338 nonn %O A055338 14,2 %A A055338 _Christian G. Bower_, May 12 2000