A210418 - cp's OEIS frontend

A210418 List the positions of all digits 4 in the concatenation of all terms, not necessarily in order. This is the lexicographically earliest such sequence.

n	a(n)
1	2
2	4
3	5
4	44
5	7
6	40
7	11
8	41
9	14
10	17
11	42
12	21
13	43
14	24
15	27
16	45
17	31
18	46
19	34
20	37
21	47
22	54
23	444
24	4444
25	48
26	52
27	404
28	57
29	400
30	62
31	401
32	67
33	402
34	72
35	403
36	77
37	405
38	82
39	406
40	87
41	407
42	92
43	408
44	97
45	409
46	103
47	410
48	109
49	411
50	114
51	118
52	412
53	124
54	413
55	123
56	133
57	414
58	135
59	140

[2, 4, 5, 44, 7, 40, 11, 41, 14, 17, 42, 21, 43, 24, 27, 45, 31, 46, 34, 37, 47, 54, 444, 4444, 48, 52, 404, 57, 400, 62, 401, 67, 402, 72, 403, 77, 405, 82, 406, 87, 407, 92, 408, 97, 409, 103, 410, 109, 411, 114, 118, 412, 124, 413, 123, 133, 414, 135, 140]

cp's OEIS Frontend

A210418 List the positions of all digits 4 in the concatenation of all terms, not necessarily in order. This is the lexicographically earliest such sequence.

Table of values

List of values