0,1
J. C. Lagarias, ed., The Ultimate Challenge: The 3x+1 Problem, Amer. Math. Soc., 2010; see page 88.
Table of n, a(n) for n=0..6.
Index entries for sequences related to 3x+1 (or Collatz) problem
Cf. A185450.
Sequence in context: A014468 A156373 A029492 * A165608 A152574 A035701
Adjacent sequences: A185448 A185449 A185450 * A185452 A185453 A185454
nonn
N. J. A. Sloane, Feb 04 2011
approved