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A161023
Collatz trajectory starting at 35655.
6
35655, 106966, 53483, 160450, 80225, 240676, 120338, 60169, 180508, 90254, 45127, 135382, 67691, 203074, 101537, 304612, 152306, 76153, 228460, 114230, 57115, 171346, 85673, 257020, 128510, 64255, 192766, 96383, 289150, 144575, 433726
OFFSET
0,1
COMMENTS
35655 = A060412(7); a(A006577(35655)) = a(323) = 1.
a(n) = A161021(n-153) for n with 297 <= n <= 323;
a(n) = A161022(n-100) for n with 308 <= n <= 323.
At step 321 becomes periodic: 4 2 1 4 2 1 4 2 1 ... - N. J. A. Sloane, Jul 27 2019
MATHEMATICA
NestWhileList[If[EvenQ[#], #/2, 3#+1]&, 35655, #>1&] (* Harvey P. Dale, Apr 28 2016 *)
CROSSREFS
Cf. A008884.
Sequence in context: A204666 A163680 A172712 * A252920 A156405 A065611
KEYWORD
nonn,look,easy
AUTHOR
Reinhard Zumkeller, Jun 03 2009
EXTENSIONS
Edited by N. J. A. Sloane, Jul 27 2019
STATUS
approved