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A239218
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.
18
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 101, 20, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 102, 30, 23, 24, 25, 26, 27, 28, 29, 31, 32, 33, 103, 40, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 104, 50, 45, 46, 47, 48, 49, 51, 52, 53, 54, 55, 105, 60, 56, 57, 58, 59, 61
OFFSET
1,2
COMMENTS
Computed by Lars Blomberg.
REFERENCES
Eric Angelini, Posting to Sequence Fans Mailing List, Sep 28 2013
LINKS
Eric Angelini, Less than <, Equal to =, Greater than > (see sequence Su)
Eric Angelini, Less than <, Equal to =, Greater than > [Cached copy, with permission of the author]
CROSSREFS
The sequences in this family are given in A239083-A239086, A239136-A239139, A239087-A239090, A239215-A239218, A239235.
Sequence in context: A188649 A068634 A049872 * A263563 A004873 A043316
KEYWORD
nonn,base
AUTHOR
Michel Marcus, Mar 12 2014
STATUS
approved