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 A055331 #10 Aug 28 2018 23:41:01 %S A055331 6,61,329,1289,4133,11462,28536,65194,138956,279457,535131,982224, %T A055331 1737756,2976311,4953198,8033628,12731680,19758178,30083086,45010674, %U A055331 66275305,96155116,137614204,194469039,271593493,375156018,512907786 %N A055331 Number of rooted identity trees with n nodes and 6 leaves. %H A055331 Andrew Howroyd, <a href="/A055331/b055331.txt">Table of n, a(n) for n = 12..500</a> %H A055331 <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a> %Y A055331 Column 6 of A055327. %K A055331 nonn %O A055331 12,1 %A A055331 _Christian G. Bower_, May 12 2000