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 A188625 #9 Mar 30 2012 16:52:01 %S A188625 1,1,3,7,19,56,180,596,2015,6904,23923,83755,296084,1056095,3797790, %T A188625 13757665,50164787,183980036,678215028,2511483176,9337575130, %U A188625 34840575458,130412367572,489546890178,1842438724560,6950471604901,26276784902865,99539079724648,377759500611913,1436093975018569,5468247624237042,20853026397347178 %N A188625 A bisection of A188624. %Y A188625 Cf. A188624, A156043. %K A188625 nonn %O A188625 1,3 %A A188625 _N. J. A. Sloane_, Apr 06 2011