A358277 - cp's OEIS frontend

A358277 a(1) = 1, a(2) = 2; for n > 2, a(n) is the smallest positive number not occurring earlier such that a(n) is coprime to the previous Omega(a(n-1)) terms.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	11
10	9
11	10
12	13
13	12
14	17
15	14
16	15
17	19
18	16
19	23
20	18
21	25
22	29
23	20
24	21
25	31
26	22
27	27
28	35
29	26
30	33
31	37
32	24
33	41
34	28
35	43
36	30
37	47
38	32
39	53
40	34
41	39
42	49
43	38
44	45
45	59
46	36
47	61
48	40
49	67
50	42
51	71
52	44
53	65
54	51
55	46
56	55
57	57
58	52
59	73
60	48
61	79
62	50
63	77
64	69
65	58
66	83
67	54
68	85
69	89
70	56
71	97
72	60
73	101
74	62
75	63
76	95

[1, 2, 3, 4, 5, 6, 7, 8, 11, 9, 10, 13, 12, 17, 14, 15, 19, 16, 23, 18, 25, 29, 20, 21, 31, 22, 27, 35, 26, 33, 37, 24, 41, 28, 43, 30, 47, 32, 53, 34, 39, 49, 38, 45, 59, 36, 61, 40, 67, 42, 71, 44, 65, 51, 46, 55, 57, 52, 73, 48, 79, 50, 77, 69, 58, 83, 54, 85, 89, 56, 97, 60, 101, 62, 63, 95]

cp's OEIS Frontend

A358277 a(1) = 1, a(2) = 2; for n > 2, a(n) is the smallest positive number not occurring earlier such that a(n) is coprime to the previous Omega(a(n-1)) terms.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	11
10	9
11	10
12	13
13	12
14	17
15	14
16	15
17	19
18	16
19	23
20	18
21	25
22	29
23	20
24	21
25	31
26	22
27	27
28	35
29	26
30	33
31	37
32	24
33	41
34	28
35	43
36	30
37	47
38	32
39	53
40	34
41	39
42	49
43	38
44	45
45	59
46	36
47	61
48	40
49	67
50	42
51	71
52	44
53	65
54	51
55	46
56	55
57	57
58	52
59	73
60	48
61	79
62	50
63	77
64	69
65	58
66	83
67	54
68	85
69	89
70	56
71	97
72	60
73	101
74	62
75	63
76	95

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	11
10	9
11	10
12	13
13	12
14	17
15	14
16	15
17	19
18	16
19	23
20	18
21	25
22	29
23	20
24	21
25	31
26	22
27	27
28	35
29	26
30	33
31	37
32	24
33	41
34	28
35	43
36	30
37	47
38	32
39	53
40	34
41	39
42	49
43	38
44	45
45	59
46	36
47	61
48	40
49	67
50	42
51	71
52	44
53	65
54	51
55	46
56	55
57	57
58	52
59	73
60	48
61	79
62	50
63	77
64	69
65	58
66	83
67	54
68	85
69	89
70	56
71	97
72	60
73	101
74	62
75	63
76	95

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	11
10	9
11	10
12	13
13	12
14	17
15	14
16	15
17	19
18	16
19	23
20	18
21	25
22	29
23	20
24	21
25	31
26	22
27	27
28	35
29	26
30	33
31	37
32	24
33	41
34	28
35	43
36	30
37	47
38	32
39	53
40	34
41	39
42	49
43	38
44	45
45	59
46	36
47	61
48	40
49	67
50	42
51	71
52	44
53	65
54	51
55	46
56	55
57	57
58	52
59	73
60	48
61	79
62	50
63	77
64	69
65	58
66	83
67	54
68	85
69	89
70	56
71	97
72	60
73	101
74	62
75	63
76	95