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A085694
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Let f(0) = 1, f(1) = 12, f(2) = 223, f(3) = 3334, f(4) = 44445, f(5) = 555556, etc. Sequence gives limiting value of f(0), f(f(0)), f(f(f(0))), ...
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1
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1, 2, 2, 2, 3, 2, 2, 3, 2, 2, 3, 3, 3, 3, 4, 2, 2, 3, 2, 2, 3, 3, 3, 3, 4, 2, 2, 3, 2, 2, 3, 3, 3, 3, 4, 3, 3, 3, 4, 3, 3, 3, 4, 3, 3, 3, 4, 4, 4, 4, 4, 5, 2, 2, 3, 2, 2, 3, 3, 3, 3, 4, 2, 2, 3, 2, 2, 3, 3, 3, 3, 4, 3, 3, 3, 4, 3, 3, 3, 4, 3, 3, 3, 4, 4, 4, 4, 4, 5, 2, 2, 3, 2, 2, 3, 3, 3, 3, 4
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OFFSET
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1,2
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COMMENTS
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The positions where 1, 2, 3, 4, 5, ... appear are 1, 2, 5, 15, 52, ... (Bell numbers A000110).
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LINKS
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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