A114861 - cp's OEIS frontend

A114861 a(n) is smallest positive integer not among the earlier terms of the sequence, not equal to n and which is coprime to its adjacent terms in the sequence.

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

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

cp's OEIS Frontend

A114861 a(n) is smallest positive integer not among the earlier terms of the sequence, not equal to n and which is coprime to its adjacent terms in the sequence.

Table of values

List of values

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

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

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