Search: id:A000268
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%I A000268 M3003 N1218
%S A000268 1,3,15,105,947,10472,137337,2085605,36017472,697407850,14969626900,
%T A000268 352877606716,9064191508018,252024567201300,7542036496650006,
%U A000268 241721880399970938,8261159383595659128,299916384730043070880
%N A000268 E.g.f.: -ln(1+ln(1+ln(1-x))).
%D A000268 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A000268 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A000268 J. Ginsburg, Iterated exponentials, Scripta Math., 11 (1945), 340-353.
%H A000268 T. D. Noe, <a href="b000268.txt">Table of n, a(n) for n=1..100</a>
%H A000268 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 A000268 INRIA Algorithms Project, <a href="http://algo.inria.fr/bin/encyclopedia?Search=ECSnb&argsearch=299">
               Encyclopedia of Combinatorial Structures 299</a>
%Y A000268 a(n)=|A039815(n, 1)| (first column of triangle). Cf. A003713, A000310, 
               A000359, A000406, A001765.
%Y A000268 Sequence in context: A067546 A015682 A001147 this_sequence A118750 A070826 
               A048599
%Y A000268 Adjacent sequences: A000265 A000266 A000267 this_sequence A000269 A000270 
               A000271
%K A000268 nonn
%O A000268 1,2
%A A000268 N. J. A. Sloane (njas(AT)research.att.com).
%E A000268 Revised description from Christian G. Bower (bowerc(AT)usa.net), Aug 
               15 1998.

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