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 A227813 #4 Jul 31 2013 17:05:21 %S A227813 6,57,331,1534,6271,23458,82376,275587,887706,2773137,8448475, %T A227813 25203966,73869495,213244665,607595613,1711636481,4774000801, %U A227813 13198942637,36208850834,98645557887,267081435051,719094529584,1926377343196,5137083969024,13642483285790 %N A227813 Number of rooted identity trees with n nodes and exactly 9 subtrees from the root. %H A227813 Alois P. Heinz, <a href="/A227813/b227813.txt">Table of n, a(n) for n = 36..800</a> %Y A227813 Column k=9 of A227774. %K A227813 nonn %O A227813 36,1 %A A227813 _Alois P. Heinz_, Jul 31 2013