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.

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

Table of n, a(n) for n=1..67.

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

Adjacent sequences: A239136 A239137 A239138 * A239140 A239141 A239142

Keyword

nonn,base

Author

Michel Marcus, Mar 11 2014

Status

approved