%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