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A239090
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The sequence S = a(1), a(2), ... is defined by a(1)=1, if d,e,f are consecutive digits then we do not have d >= e < f, and S is always extended with the smallest integer not yet present in S.
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18
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1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 111, 1111, 11111, 111111, 1111111, 11111111, 111111111, 1111111111, 11111111111, 111111111111, 1111111111111, 11111111111111, 111111111111111, 1111111111111111, 11111111111111111, 111111111111111111
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OFFSET
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1,2
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COMMENTS
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Computed by Lars Blomberg.
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REFERENCES
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Eric Angelini, Posting to Sequence Fans Mailing List, Sep 28 2013
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LINKS
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Table of n, a(n) for n=1..26.
Eric Angelini, Less than <, Equal to =, Greater than > (see sequence Sp)
Eric Angelini, Less than <, Equal to =, Greater than > [Cached copy, with permission of the author]
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CROSSREFS
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The sequences in this family are given in A239083-A239086, A239136-A239139, A239087-A239090, A239215-A239218, A239235.
Sequence in context: A277856 A117057 A249516 * A248889 A029967 A029968
Adjacent sequences: A239087 A239088 A239089 * A239091 A239092 A239093
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KEYWORD
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nonn,base
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AUTHOR
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N. J. A. Sloane, Mar 11 2014
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STATUS
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approved
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