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A145078 Minimal value of cycle of trajectory of n described in A098282, or -1 if no cycle is ever reached. 3

%I #13 Feb 10 2018 08:40:13

%S 1,1,1,1,1,9,1,9,9,9,1,9,9,14,9,1,1,1,9,9,1,9,9,1,25,1,1,1,9,9,1,1,25,

%T 1,1,1,9,1,1,9,9,1,14,1,9,9,9,9,1,9,1

%N Minimal value of cycle of trajectory of n described in A098282, or -1 if no cycle is ever reached.

%C a(52) is currently unknown. - _Donovan Johnson_

%C a(40) is probably incorrect and should be 1. (See corrections to A098282 and A144914.) - _Andrew Howroyd_, Feb 06 2018

%Y Cf. A098282, A087712, A145077, A145079, A077960.

%K nonn,more

%O 1,6

%A _David Applegate_ and _N. J. A. Sloane_, Feb 09 2009

%E Comment edited by _John W. Layman_, Nov 03 2010

%E a(1)-a(18) confirmed and a(19)-a(39) added by _John W. Layman_, Nov 03 2010

%E a(40) and a(51) from _Donovan Johnson_, Jan 08 2011

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Last modified March 28 16:34 EDT 2024. Contains 371254 sequences. (Running on oeis4.)