A352849 - cp's OEIS frontend

A352849 a(n) is the least k not already in the sequence such that k is pairwise coprime to a(n-1) and a(n-2), starting with a(1) = 1, a(2) = 3, and a(3) = 5.

n	a(n)
1	1
2	3
3	5
4	2
5	7
6	9
7	4
8	11
9	13
10	6
11	17
12	19
13	8
14	15
15	23
16	14
17	25
18	27
19	16
20	29
21	21
22	10
23	31
24	33
25	20
26	37
27	39
28	22
29	35
30	41
31	12
32	43
33	47
34	18
35	49
36	53
37	24
38	55
39	59
40	26
41	45
42	61
43	28
44	51
45	65
46	32
47	57
48	67
49	34
50	63
51	71
52	38
53	69
54	73
55	40
56	77
57	79
58	30
59	83
60	89
61	36
62	85
63	91
64	44
65	75
66	97
67	46
68	81

[1, 3, 5, 2, 7, 9, 4, 11, 13, 6, 17, 19, 8, 15, 23, 14, 25, 27, 16, 29, 21, 10, 31, 33, 20, 37, 39, 22, 35, 41, 12, 43, 47, 18, 49, 53, 24, 55, 59, 26, 45, 61, 28, 51, 65, 32, 57, 67, 34, 63, 71, 38, 69, 73, 40, 77, 79, 30, 83, 89, 36, 85, 91, 44, 75, 97, 46, 81]

cp's OEIS Frontend

A352849 a(n) is the least k not already in the sequence such that k is pairwise coprime to a(n-1) and a(n-2), starting with a(1) = 1, a(2) = 3, and a(3) = 5.

Table of values

List of values

n	a(n)
1	1
2	3
3	5
4	2
5	7
6	9
7	4
8	11
9	13
10	6
11	17
12	19
13	8
14	15
15	23
16	14
17	25
18	27
19	16
20	29
21	21
22	10
23	31
24	33
25	20
26	37
27	39
28	22
29	35
30	41
31	12
32	43
33	47
34	18
35	49
36	53
37	24
38	55
39	59
40	26
41	45
42	61
43	28
44	51
45	65
46	32
47	57
48	67
49	34
50	63
51	71
52	38
53	69
54	73
55	40
56	77
57	79
58	30
59	83
60	89
61	36
62	85
63	91
64	44
65	75
66	97
67	46
68	81

n	a(n)
1	1
2	3
3	5
4	2
5	7
6	9
7	4
8	11
9	13
10	6
11	17
12	19
13	8
14	15
15	23
16	14
17	25
18	27
19	16
20	29
21	21
22	10
23	31
24	33
25	20
26	37
27	39
28	22
29	35
30	41
31	12
32	43
33	47
34	18
35	49
36	53
37	24
38	55
39	59
40	26
41	45
42	61
43	28
44	51
45	65
46	32
47	57
48	67
49	34
50	63
51	71
52	38
53	69
54	73
55	40
56	77
57	79
58	30
59	83
60	89
61	36
62	85
63	91
64	44
65	75
66	97
67	46
68	81

n	a(n)
1	1
2	3
3	5
4	2
5	7
6	9
7	4
8	11
9	13
10	6
11	17
12	19
13	8
14	15
15	23
16	14
17	25
18	27
19	16
20	29
21	21
22	10
23	31
24	33
25	20
26	37
27	39
28	22
29	35
30	41
31	12
32	43
33	47
34	18
35	49
36	53
37	24
38	55
39	59
40	26
41	45
42	61
43	28
44	51
45	65
46	32
47	57
48	67
49	34
50	63
51	71
52	38
53	69
54	73
55	40
56	77
57	79
58	30
59	83
60	89
61	36
62	85
63	91
64	44
65	75
66	97
67	46
68	81