A355269 - cp's OEIS frontend

A355269 Lexicographically earliest infinite sequence of distinct positive integers such that a(n+1) is prime to the number of divisors of a(n).

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	9
7	4
8	8
9	11
10	13
11	15
12	17
13	19
14	21
15	23
16	25
17	10
18	27
19	29
20	31
21	33
22	35
23	37
24	39
25	41
26	43
27	45
28	47
29	49
30	14
31	51
32	53
33	55
34	57
35	59
36	61
37	63
38	65
39	67
40	69
41	71
42	73
43	75
44	77
45	79
46	81
47	6
48	83
49	85
50	87
51	89
52	91
53	93
54	95
55	97
56	99
57	101
58	103
59	105
60	107
61	109
62	111
63	113
64	115
65	117
66	119

[1, 2, 3, 5, 7, 9, 4, 8, 11, 13, 15, 17, 19, 21, 23, 25, 10, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 14, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 6, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, 115, 117, 119]

cp's OEIS Frontend

A355269 Lexicographically earliest infinite sequence of distinct positive integers such that a(n+1) is prime to the number of divisors of a(n).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	9
7	4
8	8
9	11
10	13
11	15
12	17
13	19
14	21
15	23
16	25
17	10
18	27
19	29
20	31
21	33
22	35
23	37
24	39
25	41
26	43
27	45
28	47
29	49
30	14
31	51
32	53
33	55
34	57
35	59
36	61
37	63
38	65
39	67
40	69
41	71
42	73
43	75
44	77
45	79
46	81
47	6
48	83
49	85
50	87
51	89
52	91
53	93
54	95
55	97
56	99
57	101
58	103
59	105
60	107
61	109
62	111
63	113
64	115
65	117
66	119

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	9
7	4
8	8
9	11
10	13
11	15
12	17
13	19
14	21
15	23
16	25
17	10
18	27
19	29
20	31
21	33
22	35
23	37
24	39
25	41
26	43
27	45
28	47
29	49
30	14
31	51
32	53
33	55
34	57
35	59
36	61
37	63
38	65
39	67
40	69
41	71
42	73
43	75
44	77
45	79
46	81
47	6
48	83
49	85
50	87
51	89
52	91
53	93
54	95
55	97
56	99
57	101
58	103
59	105
60	107
61	109
62	111
63	113
64	115
65	117
66	119

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	9
7	4
8	8
9	11
10	13
11	15
12	17
13	19
14	21
15	23
16	25
17	10
18	27
19	29
20	31
21	33
22	35
23	37
24	39
25	41
26	43
27	45
28	47
29	49
30	14
31	51
32	53
33	55
34	57
35	59
36	61
37	63
38	65
39	67
40	69
41	71
42	73
43	75
44	77
45	79
46	81
47	6
48	83
49	85
50	87
51	89
52	91
53	93
54	95
55	97
56	99
57	101
58	103
59	105
60	107
61	109
62	111
63	113
64	115
65	117
66	119