A278649 - cp's OEIS frontend

A278649 Lexicographically earliest sequence of distinct terms such that, for any n>0, a(n+1) has a digit that divides a(n) and a(n) has a digit that divides a(n+1).

n	a(n)
1	1
2	10
3	2
4	12
5	3
6	15
7	5
8	25
9	14
10	7
11	21
12	11
13	13
14	16
15	4
16	20
17	18
18	6
19	24
20	8
21	32
22	22
23	26
24	28
25	34
26	27
27	30
28	33
29	36
30	9
31	63
32	39
33	51
34	17
35	19
36	31
37	41
38	61
39	71
40	81
41	23
42	100
43	29
44	102
45	35
46	45
47	50
48	55
49	65
50	54
51	52
52	40
53	44
54	48
55	56
56	42
57	38
58	72
59	46
60	92
61	62
62	82
63	104
64	43
65	105
66	37

[1, 10, 2, 12, 3, 15, 5, 25, 14, 7, 21, 11, 13, 16, 4, 20, 18, 6, 24, 8, 32, 22, 26, 28, 34, 27, 30, 33, 36, 9, 63, 39, 51, 17, 19, 31, 41, 61, 71, 81, 23, 100, 29, 102, 35, 45, 50, 55, 65, 54, 52, 40, 44, 48, 56, 42, 38, 72, 46, 92, 62, 82, 104, 43, 105, 37]

cp's OEIS Frontend

A278649 Lexicographically earliest sequence of distinct terms such that, for any n>0, a(n+1) has a digit that divides a(n) and a(n) has a digit that divides a(n+1).

Table of values

List of values

n	a(n)
1	1
2	10
3	2
4	12
5	3
6	15
7	5
8	25
9	14
10	7
11	21
12	11
13	13
14	16
15	4
16	20
17	18
18	6
19	24
20	8
21	32
22	22
23	26
24	28
25	34
26	27
27	30
28	33
29	36
30	9
31	63
32	39
33	51
34	17
35	19
36	31
37	41
38	61
39	71
40	81
41	23
42	100
43	29
44	102
45	35
46	45
47	50
48	55
49	65
50	54
51	52
52	40
53	44
54	48
55	56
56	42
57	38
58	72
59	46
60	92
61	62
62	82
63	104
64	43
65	105
66	37

n	a(n)
1	1
2	10
3	2
4	12
5	3
6	15
7	5
8	25
9	14
10	7
11	21
12	11
13	13
14	16
15	4
16	20
17	18
18	6
19	24
20	8
21	32
22	22
23	26
24	28
25	34
26	27
27	30
28	33
29	36
30	9
31	63
32	39
33	51
34	17
35	19
36	31
37	41
38	61
39	71
40	81
41	23
42	100
43	29
44	102
45	35
46	45
47	50
48	55
49	65
50	54
51	52
52	40
53	44
54	48
55	56
56	42
57	38
58	72
59	46
60	92
61	62
62	82
63	104
64	43
65	105
66	37

n	a(n)
1	1
2	10
3	2
4	12
5	3
6	15
7	5
8	25
9	14
10	7
11	21
12	11
13	13
14	16
15	4
16	20
17	18
18	6
19	24
20	8
21	32
22	22
23	26
24	28
25	34
26	27
27	30
28	33
29	36
30	9
31	63
32	39
33	51
34	17
35	19
36	31
37	41
38	61
39	71
40	81
41	23
42	100
43	29
44	102
45	35
46	45
47	50
48	55
49	65
50	54
51	52
52	40
53	44
54	48
55	56
56	42
57	38
58	72
59	46
60	92
61	62
62	82
63	104
64	43
65	105
66	37