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 A227810 #4 Jul 31 2013 17:07:25 %S A227810 3,12,52,168,537,1591,4605,12878,35434,95686,255451,674351,1765821, %T A227810 4589927,11862112,30500143,78095203,199230786,506693631,1285172861, %U A227810 3252142655,8212876975,20703986186,52112143876,130988626702,328857650246,824753010860,2066496137418 %N A227810 Number of rooted identity trees with n nodes and exactly 6 subtrees from the root. %H A227810 Alois P. Heinz, <a href="/A227810/b227810.txt">Table of n, a(n) for n = 20..800</a> %Y A227810 Column k=6 of A227774. %K A227810 nonn %O A227810 20,1 %A A227810 _Alois P. Heinz_, Jul 31 2013