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%I #5 Mar 30 2012 18:52:05
%S 1,1,4,6,144,240,8640,15120,403200,725760,43545600,79833600,
%T 201180672000,373621248000,2092278988800,3923023104000,
%U 1883051089920000,3556874280960000,2688996956405760000,5109094217170944000,1605715325396582400000,3065456530302566400000
%N A091137(n)/(n+1).
%F a(n) = A174727(n)/A027760(n+1).
%K nonn
%O 0,3
%A _Paul Curtz_, Apr 19 2010
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