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A330258 Number of length-n squarefree ternary words having no occurrences of either 010 or 020. 2

%I

%S 1,3,6,10,14,22,26,34,38,44,48,60,64,64,74,82,86,100,110,122,134,150,

%T 142,144,146,150,166,176,182,198,212,236,252,264,282,302,288,280,274,

%U 276,292,312,314,312,332,356,380,392,404,428,456,470,478,492,508,532

%N Number of length-n squarefree ternary words having no occurrences of either 010 or 020.

%D A. Thue. Über die gegenseitige Lage gleicher Teile gewisser Zeichenreihen. Norske vid. Selsk. Skr. Mat. Nat. Kl. 1 (1912), 1-67. Reprinted in Selected Mathematical Papers of Axel Thue, T. Nagell, editor, Universitetsforlaget, Oslo, 1977, pp. 413-478.

%H J. Berstel, <a href="http://www-igm.univ-mlv.fr/~berstel/Articles/1994ThueTranslation.pdf">Axel Thue's papers on repetitions in words: a translation</a>, Publications du Laboratoire de Combinatoire et d'Informatique Mathématique, Vol. 20, Université du Québec à Montréal, February 1995.

%Y Cf. A330257, A330259.

%K nonn

%O 0,2

%A _Jeffrey Shallit_, Dec 07 2019

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Last modified January 20 10:18 EST 2022. Contains 350471 sequences. (Running on oeis4.)