A239084 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.

1, 2, 10, 3, 11, 4, 12, 13, 14, 15, 16, 5, 6, 17, 18, 7, 8, 19, 20, 9, 21, 30, 31, 32, 22, 23, 24, 25, 26, 27, 28, 29, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 50, 51, 52, 53, 54, 44, 45, 46, 47, 48, 49, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 70, 71, 72, 73, 74, 75, 76, 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..73.

Eric Angelini, Less than <, Equal to =, Greater than > (see sequence Sb)

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: A337321 A342047 A239083 * A322000 A061196 A239136

Adjacent sequences: A239081 A239082 A239083 * A239085 A239086 A239087

Keyword

nonn,base

Author

N. J. A. Sloane, Mar 10 2014

Status

approved