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Conjectured values of n whose trajectory under map x -> A002487(x)*A002487(x+1) does not go into a cycle.
3

%I #9 Nov 04 2013 13:16:09

%S 37,38,41,54,57,58

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

%C 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]

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

%K nonn,more

%O 1,1

%A _J. H. Conway_, Jun 10 2002