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 A229403 #8 Sep 22 2013 20:27:47 %S A229403 1,8,35,118,347,937,2396,5913,14232,33628,78354,180562,412369,934692, %T A229403 2105002,4714008,10504530,23304653,51497811,113391278,248863010, %U A229403 544569597,1188413271,2587000060,5618544541,12176514816,26336600045,56858108011,122538855414 %N A229403 Number of n-node rooted identity trees of height 9. %C A229403 The number of terms with a(n)>0 is A038093(9)-9. %H A229403 Alois P. Heinz, <a href="/A229403/b229403.txt">Table of n, a(n) for n = 10..500</a> %Y A229403 Column k=9 of A227819. %K A229403 nonn,fini %O A229403 10,2 %A A229403 _Alois P. Heinz_, Sep 22 2013