A308540 - cp's OEIS frontend

A308540 a(n) is the least nonnegative number whose digits do not appear in order (not necessarily consecutively) in the concatenation of all previous terms.

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	22
13	33
14	44
15	55
16	66
17	77
18	88
19	99
20	100
21	332
22	554
23	776
24	998
25	1001
26	3322
27	5544
28	7766
29	9988
30	33220
31	33221
32	55445
33	77667
34	99889
35	332200
36	332211
37	776674
38	776675
39	3322008
40	3322009
41	7766741
42	7766755
43	33220088
44	33220099
45	77667411

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 22, 33, 44, 55, 66, 77, 88, 99, 100, 332, 554, 776, 998, 1001, 3322, 5544, 7766, 9988, 33220, 33221, 55445, 77667, 99889, 332200, 332211, 776674, 776675, 3322008, 3322009, 7766741, 7766755, 33220088, 33220099, 77667411]

cp's OEIS Frontend

A308540 a(n) is the least nonnegative number whose digits do not appear in order (not necessarily consecutively) in the concatenation of all previous terms.

Table of values

List of values