login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A132990 Trajectory of 11 under map n -> A132988(n). 2
11, 16, 18, 31, 32, 33, 23, 21, 37, 79, 67, 83, 54, 63, 77, 65, 157, 115, 158, 155, 227, 239, 250, 176, 150, 96, 84, 62, 98, 87, 50, 46, 40, 29, 22, 20, 24, 30, 38, 41, 36, 76, 64, 52, 60, 47, 53, 121, 331, 202, 112, 307, 507, 453, 267, 190, 128, 90, 116, 107, 147, 122 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

11 is the smallest number that does not belong to a cycle with elements <= 200000. Further numbers that do not belong to a cycle with elements <= 200000 and do not occur in the trajectory of a smaller number are 25, 59, 73, 75, 99, 125, ... .

Conjecture: Sequence is not periodic.

LINKS

Table of n, a(n) for n=0..61.

EXAMPLE

a(1) = A132988(11) = 16; a(2) = A132988(16) = 18.

CROSSREFS

Cf. A132988, A132989, A132991.

Sequence in context: A147333 A097156 A138791 * A074197 A106673 A329389

Adjacent sequences:  A132987 A132988 A132989 * A132991 A132992 A132993

KEYWORD

nonn

AUTHOR

Klaus Brockhaus, Sep 14 2007

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 October 22 01:48 EDT 2021. Contains 348160 sequences. (Running on oeis4.)