%I #8 Mar 31 2012 12:34:56
%S 1,120,241920,2352430080,70008319180800,4981141593037209600,
%T 724337282211580477440000,193082117289145211195228160000,
%U 87097726450270042926290105794560000
%N Expansion of tan(tanh(x))*sin(x)/2.
%t Tan[ x^2 ]/2 (* [ x^(4n+2) ] *)
%Y A024348.
%K nonn
%O 0,2
%A _R. H. Hardin_
%E Extended and signs tested 03/97.