A239090 - cp's OEIS frontend

A239090 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.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	111
12	1111
13	11111
14	111111
15	1111111
16	11111111
17	111111111
18	1111111111
19	11111111111
20	111111111111
21	1111111111111
22	11111111111111
23	111111111111111
24	1111111111111111
25	11111111111111111
26	111111111111111111

[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]

cp's OEIS Frontend

A239090 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.

Table of values

List of values