A167419 - cp's OEIS frontend

A167419 Exchange adjacent nonprimes and primes.

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

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

cp's OEIS Frontend

A167419 Exchange adjacent nonprimes and primes.

Table of values

List of values

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

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

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