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A006711
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Describe previous term from the right (method A - initial term is 1).
(Formerly M4778)
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25
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1, 11, 21, 1112, 1231, 11131211, 2112111331, 112331122112, 12212221231221, 11221113121132112211, 212221121321121113312221, 113211233112211213111221321112
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Method A = 'frequency' followed by 'digit'-indication.
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REFERENCES
| J. H. Conway, personal communication.
Akhlesh Lakhtakia and C. A. Pickover, Observations on the Gleichniszahlen-Reihe: An Unusual Number Theory Sequence, J. Rec. Math., Vol. 25 #3, pp. 189-192, 1993.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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EXAMPLE
| E.g. the term after 1231 is obtained by saying "one 1, one 3, one 2, one 1", which gives 11131211.
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CROSSREFS
| Cf. A005150, A022506, A022482, A022507-A022513.
Sequence in context: A163288 A092806 A138485 * A005151 A098155 A098154
Adjacent sequences: A006708 A006709 A006710 * A006712 A006713 A006714
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KEYWORD
| nonn,base,easy,nice
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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