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 A032069 #7 Mar 30 2012 17:37:01 %S A032069 2,2,12,144,1440,20160,282240,4838400,87091200,1799884800,39597465600, %T A032069 965667225600,25107347865600,708585150873600,21257554526208000, %U A032069 682919861944320000,23219275306106880000 %N A032069 Number of reversible strings with n labeled beads of 2 colors, no palindromes of more than 1 bead. %H A032069 C. G. Bower, <a href="/transforms2.html">Transforms (2)</a> %F A032069 "BHJ" (reversible, identity, labeled) transform of 2, 0, 0, 0... %F A032069 n! * A032085. %K A032069 nonn %O A032069 1,1 %A A032069 _Christian G. Bower_