A145079 - OEIS

A145079

Length of cycle of trajectory of n described in A098282, or -1 if no cycle is ever reached.

1, 1, 1, 1, 1, 4, 1, 4, 4, 4, 1, 4, 4, 1, 4, 1, 1, 1, 4, 4, 1, 4, 4, 1, 2, 1, 1, 1, 4, 4, 1, 1, 2, 1, 1, 1, 4, 1, 1, 4, 4, 1, 1, 1, 4, 4, 4, 4, 1, 4, 1

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,6

COMMENTS

a(52) is currently unknown. - Donovan Johnson

a(40) is probably incorrect and should be 1. (See corrections to A098282 and A144914.)

LINKS

Table of n, a(n) for n=1..51.

CROSSREFS

Cf. A098282, A087712, A145077, A145078, A077960.

Sequence in context: A334487 A327304 A117445 * A196222 A035646 A144034

Adjacent sequences: A145076 A145077 A145078 * A145080 A145081 A145082

KEYWORD

nonn,more,base

AUTHOR

David Applegate and N. J. A. Sloane, Feb 09 2009

EXTENSIONS

a(19)-a(39) from John W. Layman, Mar 12 2010

a(40)-a(51) from Donovan Johnson, Jan 08 2011

STATUS

approved