%I A000406 M4264 N1782
%S A000406 1,6,57,741,12244,245755,5809875,158198200,4877852505,168055077875,
%T A000406 6400217406500,267058149580823,12118701719205803,594291742526530761,
%U A000406 31323687504696772151,1766116437541895988303,106080070002238888908150
%N A000406 Coefficients of iterated exponentials.
%D A000406 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A000406 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A000406 J. Ginsburg, Iterated exponentials, Scripta Math., 11 (1945), 340-353.
%H A000406 T. D. Noe, <a href="b000406.txt">Table of n, a(n) for n=1..100</a>
%H A000406 P. J. Cameron, <a href="http://www.cs.uwaterloo.ca/journals/JIS/index.html">
               Sequences realized by oligomorphic permutation groups</a>, J. Integ. 
               Seqs. Vol. 3 (2000), #00.1.5.
%H A000406 INRIA Algorithms Project, <a href="http://algo.inria.fr/bin/encyclopedia?Search=ECSnb&argsearch=302">
               Encyclopedia of Combinatorial Structures 302</a>
%F A000406 E.g.f.: -ln(1+ln(1+ln(1+ln(1+ln(1+ln(1-x)))))).
%Y A000406 Cf. A003713, A000268, A000310, A000359, A001765.
%Y A000406 Sequence in context: A152170 A087659 A107718 this_sequence A032119 A145170 
               A034218
%Y A000406 Adjacent sequences: A000403 A000404 A000405 this_sequence A000407 A000408 
               A000409
%K A000406 nonn
%O A000406 1,2
%A A000406 N. J. A. Sloane (njas(AT)research.att.com).