login
A239139
The sequence S = a(1), a(2), ... is defined by a(1)=1, if d,e,f are consecutive decimal 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, 12, 11, 20, 13, 14, 15, 16, 17, 18, 19, 21, 23, 22, 30, 24, 25, 26, 27, 28, 29, 31, 32, 34, 33, 40, 35, 36, 37, 38, 39, 41, 42, 43, 45, 44, 50, 46, 47, 48, 49, 51, 52, 53, 54, 56, 55, 60, 57, 58, 59, 61, 62, 63, 64, 65, 67, 66
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 Sj)
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: A085516 A276444 A276443 * A228723 A247397 A194845
KEYWORD
nonn,base
AUTHOR
Michel Marcus, Mar 11 2014
STATUS
approved