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 A032071 #7 Mar 30 2012 17:37:01 %S A032071 4,12,144,2880,57600,1451520,40642560,1316044800,47377612800, %T A032071 1900678348800,83629847347200,4017175658496000,208893134241792000, %U A032071 11700158011224883200,702009480673492992000 %N A032071 Number of reversible strings with n labeled beads of 4 colors, no palindromes of more than 1 bead. %H A032071 C. G. Bower, <a href="/transforms2.html">Transforms (2)</a> %F A032071 "BHJ" (reversible, identity, labeled) transform of 4, 0, 0, 0... %F A032071 n! * A032087. %K A032071 nonn %O A032071 1,1 %A A032071 _Christian G. Bower_