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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A033975 Trajectory of 1 under map n->39n+1 if n odd, n->n/2 if n even 0
1, 40, 20, 10, 5, 196, 98, 49, 1912, 956, 478, 239, 9322, 4661, 181780, 90890, 45445, 1772356, 886178, 443089, 17280472, 8640236, 4320118, 2160059, 84242302, 42121151, 1642724890, 821362445, 32033135356 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..28.

MATHEMATICA

NestList[If[EvenQ[#], #/2, 39#+1]&, 1, 30] (* Harvey P. Dale, Feb 04 2015 *)

CROSSREFS

Sequence in context: A117831 A152143 A277874 * A033360 A029543 A097208

Adjacent sequences:  A033972 A033973 A033974 * A033976 A033977 A033978

KEYWORD

nonn

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 April 24 22:26 EDT 2019. Contains 322446 sequences. (Running on oeis4.)