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 A036443 #11 Mar 30 2012 16:47:39 %S A036443 0,0,0,1,2,4,4,5,4,4,3,2,1,1 %N A036443 Number of ternary rooted trees with n nodes and height exactly 3. %H A036443 <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a> %Y A036443 Cf. A036370, A036437. %K A036443 nonn,fini,full %O A036443 0,5 %A A036443 _N. J. A. Sloane_ and Eric Rains (rains(AT)caltech.edu)