%I #4 Jul 10 2011 18:21:38
%S 1,3,30,43680,11030100480
%N A036981(n)/(2n)!.
%H <a href="/index/To#tournament">Index entries for sequences related to tournaments</a>
%K nonn,hard
%O 0,2
%A Andres Cardemil (andrescarde(AT)yahoo.com), Nov 28, 2001