login
Trajectory of 10 under map k -> A111273(k).
3

%I #8 Jan 17 2019 02:53:31

%S 10,11,22,23,12,13,91,161,189,285,429,473,869,957,1437,2157,3237,4857,

%T 7287,4164,3470,4511,2256,1464,1172,782,783,392,294,413,531,342,343,

%U 172,173,519,346,347,694,1735,1388,926,927,464,248,166,167,84,70,71,36,37

%N Trajectory of 10 under map k -> A111273(k).

%C 10 is the smallest number that is not member of a k-cycle with k <=13 of permutation A111273.

%C Conjecture: Sequence is not periodic.

%C For the retrograde trajectory of 10 see A113703.

%H Robert Israel, <a href="/A113702/b113702.txt">Table of n, a(n) for n = 0..81</a>

%p # assuming A111273 is a list, Vector or table

%p a113702[0]:= 10:

%p for i from 1 do

%p t:= traperror(A111273[a113702[i-1]]);

%p if not t::integer then break fi;

%p a113702[i]:=t

%p od:

%p seq(a113702[j],j=0..i-1); # _Robert Israel_, Jan 16 2019

%Y Cf. A111273, A113659, A113700, A113701, A113703.

%K nonn

%O 0,1

%A _Klaus Brockhaus_, Nov 08 2005