A359535 - cp's OEIS frontend

A359535 Lexicographically earliest sequence of distinct positive integers such that a(a(n)) and a(a(n+1)) share a common factor when n >= 2.

n	a(n)
1	1
2	2
3	4
4	6
5	3
6	8
7	5
8	12
9	7
10	10
11	13
12	15
13	14
14	16
15	18
16	20
17	9
18	22
19	11
20	28
21	17
22	91
23	19
24	25
25	33
26	21
27	29
28	39
29	34
30	23
31	32
32	38
33	51
34	57
35	24
36	37
37	40
38	26
39	42
40	30
41	43
42	69
43	46
44	27
45	47
46	58
47	87
48	31
49	35
50	44
51	52
52	54
53	36
54	74
55	41
56	59
57	50
58	60
59	86
60	48
61	62
62	93
63	45
64	65
65	94
66	49
67	63
68	53
69	70
70	72
71	55
72	82
73	56
74	1591

[1, 2, 4, 6, 3, 8, 5, 12, 7, 10, 13, 15, 14, 16, 18, 20, 9, 22, 11, 28, 17, 91, 19, 25, 33, 21, 29, 39, 34, 23, 32, 38, 51, 57, 24, 37, 40, 26, 42, 30, 43, 69, 46, 27, 47, 58, 87, 31, 35, 44, 52, 54, 36, 74, 41, 59, 50, 60, 86, 48, 62, 93, 45, 65, 94, 49, 63, 53, 70, 72, 55, 82, 56, 1591]

cp's OEIS Frontend

A359535 Lexicographically earliest sequence of distinct positive integers such that a(a(n)) and a(a(n+1)) share a common factor when n >= 2.

Table of values

List of values