A352588 - cp's OEIS frontend

A352588 a(1) = 1, a(2) = 2; for n > 2, a(n) is the smallest positive number that has not yet appeared that is coprime to a(n-1) but does not equal a(n-1)+1.

n	a(n)
1	1
2	2
3	5
4	3
5	7
6	4
7	9
8	8
9	11
10	6
11	13
12	10
13	17
14	12
15	19
16	14
17	23
18	15
19	22
20	21
21	16
22	25
23	18
24	29
25	20
26	27
27	26
28	31
29	24
30	35
31	32
32	37
33	28
34	33
35	38
36	41
37	30
38	43
39	34
40	39
41	44
42	47
43	36
44	49
45	40
46	51
47	46
48	45
49	52
50	55
51	42
52	53
53	48
54	59
55	50
56	57
57	56
58	61
59	54
60	65
61	58
62	63
63	62
64	67
65	60
66	71
67	64
68	69
69	68
70	73
71	66
72	79
73	70
74	81
75	74
76	77

[1, 2, 5, 3, 7, 4, 9, 8, 11, 6, 13, 10, 17, 12, 19, 14, 23, 15, 22, 21, 16, 25, 18, 29, 20, 27, 26, 31, 24, 35, 32, 37, 28, 33, 38, 41, 30, 43, 34, 39, 44, 47, 36, 49, 40, 51, 46, 45, 52, 55, 42, 53, 48, 59, 50, 57, 56, 61, 54, 65, 58, 63, 62, 67, 60, 71, 64, 69, 68, 73, 66, 79, 70, 81, 74, 77]

cp's OEIS Frontend

A352588 a(1) = 1, a(2) = 2; for n > 2, a(n) is the smallest positive number that has not yet appeared that is coprime to a(n-1) but does not equal a(n-1)+1.

Table of values

List of values

n	a(n)
1	1
2	2
3	5
4	3
5	7
6	4
7	9
8	8
9	11
10	6
11	13
12	10
13	17
14	12
15	19
16	14
17	23
18	15
19	22
20	21
21	16
22	25
23	18
24	29
25	20
26	27
27	26
28	31
29	24
30	35
31	32
32	37
33	28
34	33
35	38
36	41
37	30
38	43
39	34
40	39
41	44
42	47
43	36
44	49
45	40
46	51
47	46
48	45
49	52
50	55
51	42
52	53
53	48
54	59
55	50
56	57
57	56
58	61
59	54
60	65
61	58
62	63
63	62
64	67
65	60
66	71
67	64
68	69
69	68
70	73
71	66
72	79
73	70
74	81
75	74
76	77

n	a(n)
1	1
2	2
3	5
4	3
5	7
6	4
7	9
8	8
9	11
10	6
11	13
12	10
13	17
14	12
15	19
16	14
17	23
18	15
19	22
20	21
21	16
22	25
23	18
24	29
25	20
26	27
27	26
28	31
29	24
30	35
31	32
32	37
33	28
34	33
35	38
36	41
37	30
38	43
39	34
40	39
41	44
42	47
43	36
44	49
45	40
46	51
47	46
48	45
49	52
50	55
51	42
52	53
53	48
54	59
55	50
56	57
57	56
58	61
59	54
60	65
61	58
62	63
63	62
64	67
65	60
66	71
67	64
68	69
69	68
70	73
71	66
72	79
73	70
74	81
75	74
76	77

n	a(n)
1	1
2	2
3	5
4	3
5	7
6	4
7	9
8	8
9	11
10	6
11	13
12	10
13	17
14	12
15	19
16	14
17	23
18	15
19	22
20	21
21	16
22	25
23	18
24	29
25	20
26	27
27	26
28	31
29	24
30	35
31	32
32	37
33	28
34	33
35	38
36	41
37	30
38	43
39	34
40	39
41	44
42	47
43	36
44	49
45	40
46	51
47	46
48	45
49	52
50	55
51	42
52	53
53	48
54	59
55	50
56	57
57	56
58	61
59	54
60	65
61	58
62	63
63	62
64	67
65	60
66	71
67	64
68	69
69	68
70	73
71	66
72	79
73	70
74	81
75	74
76	77