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A294447 Lengths of square subwords (WW) of Kolakoski sequence A000002. 1

%I

%S 2,4,6,18,54

%N Lengths of square subwords (WW) of Kolakoski sequence A000002.

%C Carpi also shows that the Kolakoski sequence contains no cubes.

%H Arturo Carpi, <a href="https://doi.org/10.1016/0020-0190(94)00162-6">On repeated factors in C∞-words</a>, Information Processing Letters 52 (1994), 289-294.

%Y Cf. A000002.

%K nonn,fini,full

%O 1,1

%A _N. J. A. Sloane_, Nov 21 2017

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Last modified October 1 17:45 EDT 2020. Contains 337444 sequences. (Running on oeis4.)