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A332605 List of inequivalent extremal ternary words of length n over the alphabet {1,2,3}. 1

%I #12 May 07 2022 09:42:32

%S 1231213231232123121323123,12132123132131232132312132123132131232132,

%T 13213123213231213212313213123213231213212,

%U 121323123213121323123212313231232131213231232131,12132312132123132131232123132312132123132131232131,121321231321312132313213123213231213212313213121323132131232132,123121323123212313231232131231321231213231232123132312321312313

%N List of inequivalent extremal ternary words of length n over the alphabet {1,2,3}.

%C Grytczuk et al. (2020) show that this sequence is infinite, and found the shortest such word, a(1). The other words shown here were found by _Jeffrey Shallit_ (see A309623).

%H Jaroslaw Grytczuk, Hubert Kordulewski, Artur Niewiadomski, <a href="https://www.combinatorics.org/ojs/index.php/eljc/article/view/v27i1p48">Extremal Square-Free Words</a>, Electronic J. Combinatorics, 27 (1), 2020, #1.48.

%Y The distinct lengths of these words are given in A309623.

%K nonn

%O 1,1

%A _N. J. A. Sloane_, Mar 07 2020

%E a(6)-a(7) from _Michael S. Branicky_, May 06 2022

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Last modified June 12 17:47 EDT 2024. Contains 373359 sequences. (Running on oeis4.)