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A033480 3x+1 sequence beginning at 15. 0
15, 46, 23, 70, 35, 106, 53, 160, 80, 40, 20, 10, 5, 16, 8, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..92.

Index entries for sequences related to 3x+1 (or Collatz) problem

MATHEMATICA

NestList[If[EvenQ[#], #/2, 3#+1]&, 15, 100] (* From Harvey P. Dale, Dec 27 2011 *)

CROSSREFS

Sequence in context: A095129 A219813 A068513 * A041434 A136430 A139278

Adjacent sequences:  A033477 A033478 A033479 * A033481 A033482 A033483

KEYWORD

nonn,changed

AUTHOR

Jeff Burch

STATUS

approved

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Last modified May 24 21:38 EDT 2013. Contains 225631 sequences.