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Search: id:A001765
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| A001765 |
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Coefficients of iterated exponentials.
(Formerly M4447 N1882)
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+0
7
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| 1, 7, 77, 1155, 21973, 506989, 13761937, 429853851, 15192078027, 599551077881, 26140497946017, 1248134313062231, 64783855286002573, 3632510833677434324, 218845138322691595694, 14099918095287618382033
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
J. Ginsburg, Iterated exponentials, Scripta Math., 11 (1945), 340-353.
T. Hogg and B. A. Huberman, Attractors on finite sets: the dissipative dynamics of computing structures, Phys. Review A 32 (1985), 2338-2346.
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LINKS
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T. D. Noe, Table of n, a(n) for n=1..100
P. J. Cameron, Sequences realized by oligomorphic permutation groups, J. Integ. Seqs. Vol. 3 (2000), #00.1.5.
INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 303
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FORMULA
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E.g.f.: -ln(1+ln(1+ln(1+ln(1+ln(1+ln(1+ln(1-x))))))).
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CROSSREFS
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Cf. A003713, A000268, A000310, A000359, A000406.
Sequence in context: A097983 A107866 A034176 this_sequence A093980 A077706 A080492
Adjacent sequences: A001762 A001763 A001764 this_sequence A001766 A001767 A001768
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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