A124652 - cp's OEIS frontend

A124652 a(1)=1. a(n) = smallest positive integer not occurring earlier in the sequence such that every positive integer <= and coprime to (sum{k=1 to n-1} a(k)) is also coprime to a(n).

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	9
7	6
8	8
9	16
10	12
11	11
12	7
13	14
14	28
15	18
16	24
17	21
18	27
19	32
20	31
21	81
22	10
23	20
24	13
25	169
26	22
27	33
28	19
29	17
30	39
31	26
32	49
33	37
34	44
35	36
36	48
37	54
38	64
39	25
40	35
41	40
42	29
43	41
44	15
45	45
46	30
47	50
48	80
49	58
50	52
51	60
52	72
53	47
54	1369
55	42
56	56
57	98
58	59
59	57
60	38
61	76
62	62
63	116
64	128
65	75
66	87
67	23
68	115
69	46
70	91

[1, 2, 3, 4, 5, 9, 6, 8, 16, 12, 11, 7, 14, 28, 18, 24, 21, 27, 32, 31, 81, 10, 20, 13, 169, 22, 33, 19, 17, 39, 26, 49, 37, 44, 36, 48, 54, 64, 25, 35, 40, 29, 41, 15, 45, 30, 50, 80, 58, 52, 60, 72, 47, 1369, 42, 56, 98, 59, 57, 38, 76, 62, 116, 128, 75, 87, 23, 115, 46, 91]

cp's OEIS Frontend

A124652 a(1)=1. a(n) = smallest positive integer not occurring earlier in the sequence such that every positive integer <= and coprime to (sum{k=1 to n-1} a(k)) is also coprime to a(n).

Table of values

List of values