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N. J. A. Sloane, Table of n, a(n) for n=1..35 (from the web page of Tomás Oliveira e Silva)
Tomás Oliveira e Silva, Tables
Index entries for sequences related to 3x+1 (or Collatz) problem
Cf. A126241, A060412.
Sequence in context: A049191 A261672 A013467 * A065674 A135790 A253202
Adjacent sequences: A060410 A060411 A060412 * A060414 A060415 A060416
N. J. A. Sloane, Apr 06 2001; b-file added Nov 27 2007