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A283512
Last block of length-n to appear for the first time in the Kolakoski sequence K (A000002).
0
2, 11, 212, 2121, 21211, 121121, 2212212, 22122121, 221221211, 2212212112, 22122121122, 112212211211, 1122122112112, 11221221121121, 112212211211212, 1122122112112122, 11211212212211211, 112212211211212211, 1211212212112212212, 12112122121122122121, 121121221211221221211
OFFSET
1,1
EXAMPLE
For n = 4 the last block of length 4 to appear is 2121.
CROSSREFS
KEYWORD
nonn
AUTHOR
Jeffrey Shallit, Mar 09 2017
STATUS
approved