A071887 Conjectured values of n whose trajectory under map x -> A002487(x)*A002487(x+1) does not go into a cycle.

37, 38, 41, 54, 57, 58

Offset

1,1

Comments

Why isn't 42 in this list? It does not enter a cycle in under 100 iterations which is as far as I could check. [Sean A. Irvine, Oct 05 2011]

Links

Table of n, a(n) for n=1..6.

Crossrefs

Cf. A002487, A070871, A071884, A071885, A071886.

Sequence in context: A296871 A346383 A337453 * A168143 A111043 A041683

Adjacent sequences: A071884 A071885 A071886 * A071888 A071889 A071890

Keyword

nonn,more

Author

J. H. Conway, Jun 10 2002

Status

approved