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A002488
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n^(n^n), with a(0) = 0 by convention.
(Formerly M5031 N2171)
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9
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OFFSET
| 0,3
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COMMENTS
| Number of digits in terms n>3 : 155 (n=4), 2185 (n=5), 36306 (n=6), 695975 (n=7), 15151336 (n=8)
This sequence can also be written as (nāā3) in Knuth up-arrow notation.
First four terms in base 36 are 0, 1, g, 2pb5fusor. - Vladimir Joseph Stephan Orlovsky, Jun 15 2011
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REFERENCES
| P. Rossier, Grands nombres, Elemente der Mathematik, 3 (1948), 20.
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
| Hans Havermann, Next 5 terms
Eric Weisstein's World of Mathematics, Joyce Sequence
Wikipedia, Knuth's up-arrow notation
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MATHEMATICA
| Table[If[n==0, 0, n^n^n], {n, 0, 4}] [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Nov 01 2009]
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PROG
| (PARI) a(n)=n^n^n \\ Charles R Greathouse IV, Mar 10, 2011
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CROSSREFS
| Cf. A002489, A054382.
Sequence in context: A013878 A058418 A059933 * A198631 A185685 A144692
Adjacent sequences: A002485 A002486 A002487 * A002489 A002490 A002491
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KEYWORD
| nonn,nice,bref,changed
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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