A201642 Successive generations of the variant of the Kolakoski sequence.

1, 12, 1211, 121121, 121121221, 12112122122112, 1211212212211211221211, 121121221221121122121121221121121, 1211212212211211221211212211211212212211212212112, 12112122122112112212112122112112122122112122121121122122112122122112112122

Offset: 0

Author

Arkadiusz Wesolowski, Oct 09 2012

Keywords

• easy
• nonn

Comments

Word lengths give A042942.

Links

• Eric Weisstein's World of Mathematics, Kolakoski Sequence

Crossrefs

Cf. A006928, A000002.

Formula

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