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!)
A132946 Trajectory of 13 under map n -> A132948(n). 2
13, 20, 35, 37, 39, 83, 86, 221, 276, 198, 303, 222, 466, 368, 417, 1439, 1334, 1831, 7841, 4710, 6486, 5900, 4853, 2240, 1237, 5039, 4903, 7927, 20253, 13404, 24127, 46007, 43014, 259691, 607337 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

13 is the smallest number that does not belong to a cycle with elements <= 260000. Further numbers that do not belong to a cycle with elements <= 260000 and do not occur in the trajectory of a smaller number are 15, 32, 45, 59, 72, 76, 81, 85, 95, ... .

Conjecture: Sequence is not periodic.

LINKS

Table of n, a(n) for n=0..34.

EXAMPLE

a(1) = A132948(13) = 20; a(2) = A132948(20) = 35.

CROSSREFS

Cf. A132948, A132949, A132947.

Sequence in context: A164470 A164469 A164462 * A278470 A066515 A166656

Adjacent sequences:  A132943 A132944 A132945 * A132947 A132948 A132949

KEYWORD

nonn,more

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 September 20 08:53 EDT 2021. Contains 347579 sequences. (Running on oeis4.)