Search: id:A006229
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%I A006229 M2822
%S A006229 1,1,1,3,9,37,177,959,6097,41641,325249,2693691,24807321,241586893,
%T A006229 2558036145,28607094455,342232522657,4315903789009,57569080467073,
%U A006229 807258131578995,11879658510739497,183184249105857781
%N A006229 Expansion of exp( tan x ).
%D A006229 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A006229 L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 259, Sum_{k} T(n,
               k).
%D A006229 CRC Standard Mathematical Tables and Formulae, 30th ed. 1996, p. 42.
%D A006229 L. B. W. Jolley, Summation of Series. 2nd ed., Dover, NY, 1961, p. 150.
%H A006229 T. D. Noe, <a href="b006229.txt">Table of n, a(n) for n=0..100</a>
%F A006229 E.g.f.: exp(tan(x)).
%Y A006229 Cf. A003711, A003717.
%Y A006229 Cf. A047691, A047692. Row sums of A059419 and unsigned A111593.
%Y A006229 Sequence in context: A002751 A119856 A077365 this_sequence A008986 A105215 
               A158053
%Y A006229 Adjacent sequences: A006226 A006227 A006228 this_sequence A006230 A006231 
               A006232
%K A006229 nonn,easy,nice
%O A006229 0,4
%A A006229 N. J. A. Sloane (njas(AT)research.att.com), Jeffrey Shallit
%E A006229 More terms from Larry Reeves (larryr(AT)acm.org), Feb 08 2001

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