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Successive generations of the variant of the Kolakoski sequence.
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%I #20 Oct 11 2012 16:16:44

%S 1,12,1211,121121,121121221,12112122122112,1211212212211211221211,

%T 121121221221121122121121221121121,

%U 1211212212211211221211212211211212212211212212112,12112122122112112212112122112112122122112122121121122122112122122112112122

%N Successive generations of the variant of the Kolakoski sequence.

%C Word lengths give A042942.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/KolakoskiSequence.html">Kolakoski Sequence</a>

%F Generate A006928 via 1 -> 12 -> 1211 -> 121121 -> 121121221 -> ....

%Y Cf. A006928, A000002.

%K easy,nonn

%O 0,2

%A _Arkadiusz Wesolowski_, Oct 09 2012