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A106825 Trajectory of 1 under the morphism 1->1222, 2->2111. 0
1, 2, 2, 2, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..104.

F. M. Dekking, Recurrent sets, Advances in Mathematics, vol. 44, no. 1 (1982), 78-104.

Index entries for sequences that are fixed points of mappings

MAPLE

subs({1=[1, 2, 2, 2], 2=[2, 1, 1, 1]}, 1): subs({1=[1, 2, 2, 2], 2=[2, 1, 1, 1]}, %): subs({1=[1, 2, 2, 2], 2=[2, 1, 1, 1]}, %): subs({1=[1, 2, 2, 2], 2=[2, 1, 1, 1]}, %); # remove all brackets from the output; Emeric Deutsch, May 31 2005

MATHEMATICA

Nest[ Flatten[ # /. {1 -> {1, 2, 2, 2}, 2 -> {2, 1, 1, 1}}] &, {1}, 5] (* Robert G. Wilson v, Jun 20 2005 *)

CROSSREFS

Sequence in context: A275301 A282542 A271518 * A156608 A275850 A112505

Adjacent sequences:  A106822 A106823 A106824 * A106826 A106827 A106828

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, May 20 2005

EXTENSIONS

More terms from Emeric Deutsch, May 31 2005

STATUS

approved

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Last modified October 20 05:42 EDT 2017. Contains 293601 sequences.