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

%I #9 Nov 22 2017 21:01:22

%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