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A121510 Conjectured to be complete list of cycle lengths for 3x+1 (or Collatz) problem. 2
1, 2, 3, 5, 18 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..5.

CROSSREFS

Sequence in context: A253646 A004249 A268210 * A132346 A284530 A041293

Adjacent sequences:  A121507 A121508 A121509 * A121511 A121512 A121513

KEYWORD

nonn

AUTHOR

Daniel Asimov (dasimov(AT)earthlink.net), Sep 17 2006

STATUS

approved

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Last modified June 26 10:12 EDT 2019. Contains 324375 sequences. (Running on oeis4.)