login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A006985 Fibonacci tower: a(n) = F(a(n-1)+2) (there is no room for next term).
(Formerly M0742)
1
1, 2, 3, 5, 13, 610 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

The next term has 128 digits. - Harvey P. Dale, Sep 13 2011

REFERENCES

Goldstein, Arthur S.; Reingold, Edward M.; A Fibonacci version of Kraft's inequality applied to discrete unimodal search. SIAM J. Comput. 22 (1993), no. 4, 751-777.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=0..5.

MAPLE

A006985 := proc(n) option remember; if n=0 then 1; else fibonacci(A006985(n-1)+2); fi; end;

MATHEMATICA

NestList[Fibonacci[#+2]&, 1, 6] (* Harvey P. Dale, Sep 13 2011 *)

PROG

(Haskell)

a006985 n = a006985_list !! (n-1)

a006985_list = 1 : map (a000045 . (+ 2)) a006985_list

-- Reinhard Zumkeller, Jul 17 2015

CROSSREFS

Sequence in context: A038601 A114747 A041639 * A042907 A115347 A173654

Adjacent sequences:  A006982 A006983 A006984 * A006986 A006987 A006988

KEYWORD

nonn,nice,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 20 23:06 EST 2019. Contains 329348 sequences. (Running on oeis4.)