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 A317954 Fixed point of the morphism 1 -> 12, 2 -> 13, 3 -> 14, 4 -> 1, starting from a(1) = 1. 2
 1, 2, 1, 3, 1, 2, 1, 4, 1, 2, 1, 3, 1, 2, 1, 1, 2, 1, 3, 1, 2, 1, 4, 1, 2, 1, 3, 1, 2, 1, 2, 1, 3, 1, 2, 1, 4, 1, 2, 1, 3, 1, 2, 1, 1, 2, 1, 3, 1, 2, 1, 4, 1, 2, 1, 3, 1, 2, 1, 3, 1, 2, 1, 4, 1, 2, 1, 3, 1, 2, 1, 1, 2, 1, 3, 1, 2, 1, 4, 1, 2, 1, 3, 1, 2, 1, 2, 1, 3, 1, 2, 1, 4, 1, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Robert Israel, Table of n, a(n) for n = 1..10000 MAPLE A:= [1]: for n from 1 while nops(A) < 1000 do A:= subs([1=(1, 2), 2=(1, 3), 3=(1, 4), 4=1], A) od: A; # Robert Israel, Aug 21 2018 MATHEMATICA Nest[Flatten[#/.{0 -> {0, 1}, 1 -> {1, 2}, 2 -> {2, 0}}] &, {0}, 7] (* G. C. Greubel, Jan 02 2019 *) CROSSREFS Cf. A003849, A092782, A100619, A317955. Sequence in context: A156249 A187808 A317673 * A164677 A001511 A265331 Adjacent sequences: A317951 A317952 A317953 * A317955 A317956 A317957 KEYWORD nonn AUTHOR N. J. A. Sloane and Doron Zeilberger, Aug 21 2018 STATUS approved

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Last modified December 8 10:24 EST 2022. Contains 358693 sequences. (Running on oeis4.)