A353075 - cp's OEIS frontend

A353075 a(1) = 1, a(2) = 2; for n > 2, a(n) is the smallest positive number that has not appeared that shares a factor with a(n-1) * a(n-2) + |a(n-1) - a(n-2)|.

n	a(n)
1	1
2	2
3	3
4	7
5	5
6	37
7	14
8	541
9	8101
10	223
11	23
12	73
13	13
14	1009
15	11
16	12097
17	46
18	22
19	4
20	6
21	8
22	10
23	12
24	16
25	18
26	15
27	9
28	21
29	24
30	26
31	20
32	28
33	30
34	32
35	34
36	25
37	859
38	35
39	17
40	613
41	69
42	42841
43	39
44	1713601
45	19
46	92
47	27
48	2549
49	38
50	43
51	33
52	1429
53	115
54	44
55	42
56	36
57	40
58	48
59	50
60	52
61	54
62	45
63	51
64	57
65	60
66	49
67	65
68	55
69	63

[1, 2, 3, 7, 5, 37, 14, 541, 8101, 223, 23, 73, 13, 1009, 11, 12097, 46, 22, 4, 6, 8, 10, 12, 16, 18, 15, 9, 21, 24, 26, 20, 28, 30, 32, 34, 25, 859, 35, 17, 613, 69, 42841, 39, 1713601, 19, 92, 27, 2549, 38, 43, 33, 1429, 115, 44, 42, 36, 40, 48, 50, 52, 54, 45, 51, 57, 60, 49, 65, 55, 63]

cp's OEIS Frontend

A353075 a(1) = 1, a(2) = 2; for n > 2, a(n) is the smallest positive number that has not appeared that shares a factor with a(n-1) * a(n-2) + |a(n-1) - a(n-2)|.

Table of values

List of values