A354075 - cp's OEIS frontend

A354075 Lexicographically earliest infinite sequence of distinct positive integers such that A(a(n+1)) is prime to A(a(n)) but not to A(a(n-1)), where A is A001414.

n	a(n)
1	2
2	3
3	4
4	14
5	15
6	20
7	16
8	24
9	18
10	26
11	33
12	5
13	7
14	6
15	10
16	21
17	12
18	8
19	94
20	9
21	124
22	27
23	25
24	38
25	30
26	62
27	32
28	11
29	35
30	28
31	36
32	40
33	39
34	45
35	42
36	48
37	44
38	54
39	46
40	57
41	86
42	49
43	74
44	51
45	13
46	50
47	22
48	55
49	56
50	60
51	63
52	64
53	75
54	65
55	80
56	66
57	90
58	70
59	96
60	68
61	69
62	92
63	84
64	105
65	85
66	112
67	87

[2, 3, 4, 14, 15, 20, 16, 24, 18, 26, 33, 5, 7, 6, 10, 21, 12, 8, 94, 9, 124, 27, 25, 38, 30, 62, 32, 11, 35, 28, 36, 40, 39, 45, 42, 48, 44, 54, 46, 57, 86, 49, 74, 51, 13, 50, 22, 55, 56, 60, 63, 64, 75, 65, 80, 66, 90, 70, 96, 68, 69, 92, 84, 105, 85, 112, 87]

cp's OEIS Frontend

A354075 Lexicographically earliest infinite sequence of distinct positive integers such that A(a(n+1)) is prime to A(a(n)) but not to A(a(n-1)), where A is A001414.

Table of values

List of values

n	a(n)
1	2
2	3
3	4
4	14
5	15
6	20
7	16
8	24
9	18
10	26
11	33
12	5
13	7
14	6
15	10
16	21
17	12
18	8
19	94
20	9
21	124
22	27
23	25
24	38
25	30
26	62
27	32
28	11
29	35
30	28
31	36
32	40
33	39
34	45
35	42
36	48
37	44
38	54
39	46
40	57
41	86
42	49
43	74
44	51
45	13
46	50
47	22
48	55
49	56
50	60
51	63
52	64
53	75
54	65
55	80
56	66
57	90
58	70
59	96
60	68
61	69
62	92
63	84
64	105
65	85
66	112
67	87

n	a(n)
1	2
2	3
3	4
4	14
5	15
6	20
7	16
8	24
9	18
10	26
11	33
12	5
13	7
14	6
15	10
16	21
17	12
18	8
19	94
20	9
21	124
22	27
23	25
24	38
25	30
26	62
27	32
28	11
29	35
30	28
31	36
32	40
33	39
34	45
35	42
36	48
37	44
38	54
39	46
40	57
41	86
42	49
43	74
44	51
45	13
46	50
47	22
48	55
49	56
50	60
51	63
52	64
53	75
54	65
55	80
56	66
57	90
58	70
59	96
60	68
61	69
62	92
63	84
64	105
65	85
66	112
67	87

n	a(n)
1	2
2	3
3	4
4	14
5	15
6	20
7	16
8	24
9	18
10	26
11	33
12	5
13	7
14	6
15	10
16	21
17	12
18	8
19	94
20	9
21	124
22	27
23	25
24	38
25	30
26	62
27	32
28	11
29	35
30	28
31	36
32	40
33	39
34	45
35	42
36	48
37	44
38	54
39	46
40	57
41	86
42	49
43	74
44	51
45	13
46	50
47	22
48	55
49	56
50	60
51	63
52	64
53	75
54	65
55	80
56	66
57	90
58	70
59	96
60	68
61	69
62	92
63	84
64	105
65	85
66	112
67	87