A342072 - cp's OEIS frontend

A342072 Lexicographically earliest sequence of distinct positive numbers such that for any n > 0, a(n+1) can be obtained by replacing in the decimal representation of a(n) some nonempty substring m (without leading zero) by a divisor of m or by a positive multiple of m.

n	a(n)
1	1
2	2
3	4
4	8
5	16
6	11
7	12
8	3
9	6
10	18
11	9
12	27
13	17
14	34
15	14
16	7
17	21
18	22
19	24
20	28
21	48
22	41
23	42
24	44
25	84
26	81
27	82
28	86
29	26
30	13
31	19
32	29
33	23
34	43
35	46
36	92
37	32
38	31
39	33
40	36
41	66
42	61
43	62
44	64
45	68
46	38
47	76
48	71
49	72
50	74
51	37
52	67
53	127
54	47
55	87
56	167
57	117
58	39
59	69
60	63
61	123
62	113
63	111
64	112
65	56

[1, 2, 4, 8, 16, 11, 12, 3, 6, 18, 9, 27, 17, 34, 14, 7, 21, 22, 24, 28, 48, 41, 42, 44, 84, 81, 82, 86, 26, 13, 19, 29, 23, 43, 46, 92, 32, 31, 33, 36, 66, 61, 62, 64, 68, 38, 76, 71, 72, 74, 37, 67, 127, 47, 87, 167, 117, 39, 69, 63, 123, 113, 111, 112, 56]

cp's OEIS Frontend

A342072 Lexicographically earliest sequence of distinct positive numbers such that for any n > 0, a(n+1) can be obtained by replacing in the decimal representation of a(n) some nonempty substring m (without leading zero) by a divisor of m or by a positive multiple of m.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	8
5	16
6	11
7	12
8	3
9	6
10	18
11	9
12	27
13	17
14	34
15	14
16	7
17	21
18	22
19	24
20	28
21	48
22	41
23	42
24	44
25	84
26	81
27	82
28	86
29	26
30	13
31	19
32	29
33	23
34	43
35	46
36	92
37	32
38	31
39	33
40	36
41	66
42	61
43	62
44	64
45	68
46	38
47	76
48	71
49	72
50	74
51	37
52	67
53	127
54	47
55	87
56	167
57	117
58	39
59	69
60	63
61	123
62	113
63	111
64	112
65	56

n	a(n)
1	1
2	2
3	4
4	8
5	16
6	11
7	12
8	3
9	6
10	18
11	9
12	27
13	17
14	34
15	14
16	7
17	21
18	22
19	24
20	28
21	48
22	41
23	42
24	44
25	84
26	81
27	82
28	86
29	26
30	13
31	19
32	29
33	23
34	43
35	46
36	92
37	32
38	31
39	33
40	36
41	66
42	61
43	62
44	64
45	68
46	38
47	76
48	71
49	72
50	74
51	37
52	67
53	127
54	47
55	87
56	167
57	117
58	39
59	69
60	63
61	123
62	113
63	111
64	112
65	56

n	a(n)
1	1
2	2
3	4
4	8
5	16
6	11
7	12
8	3
9	6
10	18
11	9
12	27
13	17
14	34
15	14
16	7
17	21
18	22
19	24
20	28
21	48
22	41
23	42
24	44
25	84
26	81
27	82
28	86
29	26
30	13
31	19
32	29
33	23
34	43
35	46
36	92
37	32
38	31
39	33
40	36
41	66
42	61
43	62
44	64
45	68
46	38
47	76
48	71
49	72
50	74
51	37
52	67
53	127
54	47
55	87
56	167
57	117
58	39
59	69
60	63
61	123
62	113
63	111
64	112
65	56