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 A032070 #7 Mar 30 2012 17:37:01 %S A032070 3,6,54,864,12960,252720,5307120,130636800,3527193600,106697606400, %T A032070 3521021011200,127105948569600,4957131994214400,208390202679859200, %U A032070 9377559120593664000,450260112212951040000 %N A032070 Number of reversible strings with n labeled beads of 3 colors, no palindromes of more than 1 bead. %H A032070 C. G. Bower, <a href="/transforms2.html">Transforms (2)</a> %F A032070 "BHJ" (reversible, identity, labeled) transform of 3, 0, 0, 0... %F A032070 n! * A032086. %K A032070 nonn %O A032070 1,1 %A A032070 _Christian G. Bower_