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Search: id:A121994
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| A121994 |
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Smallest number that yields a sequence of n decreasing numbers under the "Look and Say" operator A045918. |
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+0
1
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| 1, 33, 333, 333111, 3333333333333333333333333333333333111111111111
(list; graph; listen)
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OFFSET
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0,2
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LINKS
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Eric Weisstein's World of Mathematics, Look and Say.
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EXAMPLE
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E.g. "a(3)=333111 because under the Look and Say operator sequence A045918 it yields: 3331, 3311, 2321 which are all decreasing (3 in a row). The next term would be 12131211 which is greater than 2321"
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CROSSREFS
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Cf. A045918, A005150, A005341, A023989, A079475.
Sequence in context: A020291 A024400 A081932 this_sequence A093743 A085742 A107965
Adjacent sequences: A121991 A121992 A121993 this_sequence A121995 A121996 A121997
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KEYWORD
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hard,more,nonn
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AUTHOR
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Sergio Pimentel (ferdiego(AT)cox.net), Sep 11 2006
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EXTENSIONS
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a(4) from Sergio Pimentel (ferdiego(AT)suddenlink.net), Mar 05 2008
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