A288538 - cp's OEIS frontend

A288538 Lexicographically earliest sequence of distinct positive terms such that, for any n > 0, n * a(n) does not contain the digit 1 in decimal base.

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

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

cp's OEIS Frontend

A288538 Lexicographically earliest sequence of distinct positive terms such that, for any n > 0, n * a(n) does not contain the digit 1 in decimal base.

Table of values

List of values

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

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

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