A273887 - cp's OEIS frontend

A273887 Pick any pair of "9" digits in the sequence. Those two "9"s are separated by k digits. This is the lexicographically earliest sequence of distinct terms in which all the resulting values of k are distinct.

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	11
13	12
14	13
15	14
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	22
24	23
25	24
26	25
27	26
28	27
29	28
30	30
31	29
32	31
33	32
34	33
35	34
36	35
37	36
38	37
39	38
40	39
41	40
42	41
43	42
44	43
45	44
46	45
47	46
48	47
49	48
50	50
51	51
52	52
53	49
54	53
55	54
56	55
57	56
58	57
59	58
60	60
61	61
62	62
63	63
64	64
65	59
66	65
67	66
68	67
69	68
70	70
71	69
72	71
73	72

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30, 29, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 51, 52, 49, 53, 54, 55, 56, 57, 58, 60, 61, 62, 63, 64, 59, 65, 66, 67, 68, 70, 69, 71, 72]

cp's OEIS Frontend

A273887 Pick any pair of "9" digits in the sequence. Those two "9"s are separated by k digits. This is the lexicographically earliest sequence of distinct terms in which all the resulting values of k are distinct.

Table of values

List of values

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	11
13	12
14	13
15	14
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	22
24	23
25	24
26	25
27	26
28	27
29	28
30	30
31	29
32	31
33	32
34	33
35	34
36	35
37	36
38	37
39	38
40	39
41	40
42	41
43	42
44	43
45	44
46	45
47	46
48	47
49	48
50	50
51	51
52	52
53	49
54	53
55	54
56	55
57	56
58	57
59	58
60	60
61	61
62	62
63	63
64	64
65	59
66	65
67	66
68	67
69	68
70	70
71	69
72	71
73	72

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	11
13	12
14	13
15	14
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	22
24	23
25	24
26	25
27	26
28	27
29	28
30	30
31	29
32	31
33	32
34	33
35	34
36	35
37	36
38	37
39	38
40	39
41	40
42	41
43	42
44	43
45	44
46	45
47	46
48	47
49	48
50	50
51	51
52	52
53	49
54	53
55	54
56	55
57	56
58	57
59	58
60	60
61	61
62	62
63	63
64	64
65	59
66	65
67	66
68	67
69	68
70	70
71	69
72	71
73	72

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	11
13	12
14	13
15	14
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	22
24	23
25	24
26	25
27	26
28	27
29	28
30	30
31	29
32	31
33	32
34	33
35	34
36	35
37	36
38	37
39	38
40	39
41	40
42	41
43	42
44	43
45	44
46	45
47	46
48	47
49	48
50	50
51	51
52	52
53	49
54	53
55	54
56	55
57	56
58	57
59	58
60	60
61	61
62	62
63	63
64	64
65	59
66	65
67	66
68	67
69	68
70	70
71	69
72	71
73	72