A003079 One of the basic cycles in the x->3x-1 (x odd) or x/2 (x even) problem.

5, 14, 7, 20, 10, 5, 14, 7, 20, 10, 5, 14, 7, 20, 10, 5, 14, 7, 20, 10, 5, 14, 7, 20, 10, 5, 14, 7, 20, 10, 5, 14, 7, 20, 10, 5, 14, 7, 20, 10, 5, 14, 7, 20, 10, 5, 14, 7, 20, 10, 5, 14, 7, 20, 10, 5, 14, 7, 20, 10, 5, 14, 7, 20, 10, 5, 14, 7, 20, 10, 5, 14, 7, 20, 10

Offset

0,1

References

R. K. Guy, Unsolved Problems in Number Theory, E16.

Links

Table of n, a(n) for n=0..74.

Mathematica

NestList[If[OddQ[#], 3#-1, #/2]&, 5, 80] (* Harvey P. Dale, Feb 27 2023 *)

Crossrefs

Sequence in context: A051542 A083660 A375302 * A334119 A205128 A292249

Adjacent sequences: A003076 A003077 A003078 * A003080 A003081 A003082

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved