A210423 - cp's OEIS frontend

A210423 List the positions of all digits 9 in the concatenation of all terms, not necessarily in order. This is the lexicographically earliest such sequence.

n	a(n)
1	2
2	9
3	4
4	90
5	7
6	91
7	92
8	13
9	93
10	17
11	94
12	21
13	95
14	25
15	96
16	29
17	97
18	28
19	35
20	98
21	39
22	99
23	38
24	40
25	47
26	900
27	52
28	901
29	57
30	902
31	62
32	903
33	67
34	904
35	72
36	905
37	77
38	906
39	82
40	907
41	87
42	908
43	999
44	9999
45	9990
46	104
47	909
48	106
49	113
50	910
51	119
52	911
53	118
54	128
55	912
56	134
57	913
58	139
59	143

[2, 9, 4, 90, 7, 91, 92, 13, 93, 17, 94, 21, 95, 25, 96, 29, 97, 28, 35, 98, 39, 99, 38, 40, 47, 900, 52, 901, 57, 902, 62, 903, 67, 904, 72, 905, 77, 906, 82, 907, 87, 908, 999, 9999, 9990, 104, 909, 106, 113, 910, 119, 911, 118, 128, 912, 134, 913, 139, 143]

cp's OEIS Frontend

A210423 List the positions of all digits 9 in the concatenation of all terms, not necessarily in order. This is the lexicographically earliest such sequence.

Table of values

List of values