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Image of 1 under the repeated morphism 1 -> 21, 2 -> 32, 3 -> 43, 4 -> 14.
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%I #19 Jun 25 2022 10:03:38

%S 1,4,4,3,4,3,3,2,4,3,3,2,3,2,2,1,4,3,3,2,3,2,2,1,3,2,2,1,2,1,1,4,4,3,

%T 3,2,3,2,2,1,3,2,2,1,2,1,1,4,3,2,2,1,2,1,1,4,2,1,1,4,1,4,4,3,4,3,3,2,

%U 3,2,2,1,3,2,2,1,2,1,1,4,3,2,2,1,2,1,1,4,2,1,1,4,1,4,4,3,3,2,2,1,2,1,1,4,2,1,1,4,1,4,4,3,2,1,1

%N Image of 1 under the repeated morphism 1 -> 21, 2 -> 32, 3 -> 43, 4 -> 14.

%H F. M. Dekking, <a href="http://dx.doi.org/10.1016/0001-8708(82)90066-4">Recurrent Sets</a>, Advances in Mathematics, vol. 44, no.1, April 1982, page 85, section 4.1.

%t s[1] = {2, 1};

%t s[2] = {3, 2};

%t s[3] = {4, 3};

%t s[4] = {1, 4};

%t t[a_] := Flatten[s /@ a];

%t p[0] = {1};

%t p[1] = t[p[0]];

%t p[n_] := t[p[n - 1]]

%t aa = p[8]

%K nonn,easy

%O 0,2

%A _Roger L. Bagula_, May 07 2005

%E Edited and new name from _Joerg Arndt_, Jun 25 2022