%I A009753
%S A009753 0,1,2,8,32,176,1056,7664,61312,559744,5597440,61925632,743107584,
%T A009753 9682766848,135558735872,2035284795392,32564556726272,553807329689600,
%U A009753 9968531934412800,189431195638956032,3788623912779120640
%V A009753 0,1,-2,8,-32,176,-1056,7664,-61312,559744,-5597440,61925632,-743107584,
%W A009753 9682766848,-135558735872,2035284795392,-32564556726272,553807329689600,
%X A009753 -9968531934412800,189431195638956032,-3788623912779120640
%N A009753 Expansion of tan(x)/(1+x).
%p A009753 restart: G(x):= tan(x)/(1+x): f[0]:=G(x): for n from 1 to 21 do f[n]:=diff(f[n-1],
               x) od: x:=0: seq(f[n],n=0..20);# [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), 
               Apr 03 2009]
%t A009753 Tan[ x ]/(1+x)
%Y A009753 Sequence in context: A137975 A051636 A081561 this_sequence A141202 A081358 
               A048855
%Y A009753 Adjacent sequences: A009750 A009751 A009752 this_sequence A009754 A009755 
               A009756
%K A009753 sign,easy
%O A009753 0,3
%A A009753 R. H. Hardin (rhhardin(AT)att.net)
%E A009753 Extended with signs Mar 15 1997 by Olivier Gerard.