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A000406
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Coefficients of iterated exponentials.
(Formerly M4264 N1782)
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7
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1, 6, 57, 741, 12244, 245755, 5809875, 158198200, 4877852505, 168055077875, 6400217406500, 267058149580823, 12118701719205803, 594291742526530761, 31323687504696772151, 1766116437541895988303, 106080070002238888908150
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| J. Ginsburg, Iterated exponentials, Scripta Math., 11 (1945), 340-353.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
| 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 302
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FORMULA
| E.g.f.: -ln(1+ln(1+ln(1+ln(1+ln(1+ln(1-x)))))).
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CROSSREFS
| Cf. A003713, A000268, A000310, A000359, A001765.
Sequence in context: A152170 A087659 A107718 * A032119 A145170 A180255
Adjacent sequences: A000403 A000404 A000405 * A000407 A000408 A000409
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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