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 A123832 #8 Oct 09 2013 14:20:53 %S A123832 1,7,227,9130,408081,19274998,946866202,47865420384,2473743947058 %N A123832 Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 3 X 3. %H A123832 M. Abrahamsen and S. Eilers, <a href="http://dx.doi.org/10.1080/10586458.2011.564539">On the asymptotic enumeration of LEGO structures</a>, Exper Math. 20 (2) (2011) 145-152. %H A123832 B. Durhuus and S. Eilers, <a href="http://arxiv.org/abs/math/0504039">On the entropy of LEGO</a>, arXiv:math.CO/0504039 %K A123832 nonn,hard %O A123832 1,2 %A A123832 _Søren Eilers_, Oct 29 2006