A349492 - cp's OEIS frontend

A349492 a(1)=1, a(2)=6; for n > 2, a(n) is the smallest unused positive number such that gcd(a(n-1)+n, a(n)) > 1, gcd(a(n-1), a(n)) > 1, and gcd(n, a(n)) > 1.

n	a(n)
1	1
2	6
3	3
4	42
5	470
6	2
7	84
8	4
9	78
10	8
11	418
12	10
13	598
14	12
15	9
16	30
17	1598
18	14
19	114
20	16
21	222
22	18
23	1886
24	20
25	5
26	310
27	2022
28	22
29	174
30	15
31	186
32	24
33	21
34	60
35	25
36	610
37	47878
38	26
39	13
40	1378
41	246
42	27
43	258
44	28
45	438
46	32
47	7426
48	34
49	1162
50	36
51	33
52	90
53	1166
54	38
55	66
56	40
57	582
58	44
59	12154
60	46
61	13054
62	48
63	39
64	618
65	6830

[1, 6, 3, 42, 470, 2, 84, 4, 78, 8, 418, 10, 598, 12, 9, 30, 1598, 14, 114, 16, 222, 18, 1886, 20, 5, 310, 2022, 22, 174, 15, 186, 24, 21, 60, 25, 610, 47878, 26, 13, 1378, 246, 27, 258, 28, 438, 32, 7426, 34, 1162, 36, 33, 90, 1166, 38, 66, 40, 582, 44, 12154, 46, 13054, 48, 39, 618, 6830]

cp's OEIS Frontend

A349492 a(1)=1, a(2)=6; for n > 2, a(n) is the smallest unused positive number such that gcd(a(n-1)+n, a(n)) > 1, gcd(a(n-1), a(n)) > 1, and gcd(n, a(n)) > 1.

Table of values

List of values