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 A056165 #2 Mar 30 2012 17:30:25 %S A056165 1,2,7,1096 %N A056165 e^[e^[e^ ... [e^0] ... ]], n high, where [] is "floor". %Y A056165 Cf. A004002, A056072. %K A056165 easy,nonn %O A056165 0,2 %A A056165 _Robert G. Wilson v_, Jul 31 2000 %E A056165 The next term is 9.69956295034023667235191839... *10^475