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