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%I #9 Feb 01 2018 10:41:53
%S 0,1,4,84,2880,155152,11947072,1240929984,166862665728,28164532992256,
%T 5825137200342016,1447885245123609600,425631502990107721728,
%U 146006164524789598523392,57780315705196065420230656,26120433169446248117938667520,13373554434110899828789859057664
%N Expansion of sinh(tan(x))*sin(x)/2.
%F a(n) = A009606(n)/2.
%t Sinh[ Tan[ x ] ]*Sin[ x ]/2 (* Even Part *)
%Y Cf. A009606.
%K nonn
%O 0,3
%A _R. H. Hardin_
%E Extended and signs tested 03/97.