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A006920
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At each step, record how many 1's, 2's, etc. have been seen so far in the sequence.
(Formerly M2126)
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3
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1, 1, 2, 21, 32, 331, 433, 4351, 53621, 647221, 7673221, 8883233, 891132333, 8101532334101, 101118423351110001, 141220533351220001001, 17142355335122101100101, 23162558335122102101101001, 30192751033612210211110100201, 3823295114361321021111110020101001
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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CROSSREFS
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A333867 is the tabular version of this sequence.
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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