1,3
If the "1" is omitted, also records in A060445.
Table of n, a(n) for n=1..36.
Tomás Oliveira e Silva, Tables
Eric Roosendaal, On the 3x + 1 problem
N. J. A. Sloane, First 36 terms of A217934 and A060412 [From Roosendaal web site]
See A102419.
Cf. A102419, A060445, A060412.
Sequence in context: A013321 A192893 A188599 * A012419 A012663 A180929
Adjacent sequences: A217931 A217932 A217933 * A217935 A217936 A217937
nonn,more
N. J. A. Sloane, Oct 20 2012
approved
