%I A003720 M4301
%S A003720 1,6,168,10672,1198080,208521728,51874413568,17449541107712,
%T A003720 7622674735988736,4193561606973095936,2836052065377836597248,
%U A003720 2312174256451088534208512,2236165580390456719589769216
%N A003720 Expansion of tan(tan(tan(x))).
%D A003720 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%t A003720 Tan[ Tan[ Tan[ x ] ]] (* Odd Part *)
%Y A003720 Sequence in context: A143534 A104729 A106661 this_sequence A002884 A166762 
               A055165
%Y A003720 Adjacent sequences: A003717 A003718 A003719 this_sequence A003721 A003722 
               A003723
%K A003720 nonn
%O A003720 0,2
%A A003720 R. H. Hardin (rhhardin(AT)att.net)
%E A003720 Extended and formatted Mar 15 1997 by Olivier Gerard