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A037101 Trajectory of 3 under map n->7n+1 if n odd, n->n/2 if n even 0
3, 22, 11, 78, 39, 274, 137, 960, 480, 240, 120, 60, 30, 15, 106, 53, 372, 186, 93, 652, 326, 163, 1142, 571, 3998, 1999, 13994, 6997, 48980, 24490, 12245, 85716, 42858, 21429, 150004, 75002, 37501, 262508 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..37.

MATHEMATICA

nxt[n_]:=If[OddQ[n], 7n+1, n/2]; NestList[nxt, 3, 40] (* Harvey P. Dale, Jun 05 2012 *)

CROSSREFS

Sequence in context: A161377 A122495 A100977 * A226028 A248626 A072398

Adjacent sequences:  A037098 A037099 A037100 * A037102 A037103 A037104

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified February 19 21:14 EST 2019. Contains 320328 sequences. (Running on oeis4.)