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A269348
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Kolakoski-(1,6) sequence: a(n) is length of n-th run.
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2
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1, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 6, 1, 6, 1, 6, 1, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 6, 1, 6, 1, 6, 1, 6, 6
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OFFSET
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1,2
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COMMENTS
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16666661111, 1666666111111, 1666666111111666666111111666666111111616161666666111111666666111 are primes.
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LINKS
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MATHEMATICA
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seed = {1, 6}; w = {}; i = 1; Do[w = Join[w, Array[seed[[Mod[i - 1, Length[seed]] + 1]] &, If[i > Length[w], seed, w][[i]]]]; i++, {n, 250}]; w (* from Ivan Neretin in similar sequences *)
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CROSSREFS
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Cf. similar sequences listed in A269268.
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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