A346150 - cp's OEIS frontend

A346150 Alternating runs of primes and composites, with the runs of primes being of composite length and the runs of composites being of prime length.

n	a(n)
1	2
2	4
3	6
4	3
5	5
6	7
7	11
8	8
9	9
10	10
11	13
12	17
13	19
14	23
15	29
16	31
17	12
18	14
19	15
20	16
21	18
22	37
23	41
24	43
25	47
26	53
27	59
28	61
29	67
30	20
31	21
32	22
33	24
34	25
35	26
36	27
37	71
38	73
39	79
40	83
41	89
42	97
43	101
44	103
45	107
46	28
47	30
48	32
49	33
50	34
51	35
52	36
53	38
54	39
55	40
56	42

[2, 4, 6, 3, 5, 7, 11, 8, 9, 10, 13, 17, 19, 23, 29, 31, 12, 14, 15, 16, 18, 37, 41, 43, 47, 53, 59, 61, 67, 20, 21, 22, 24, 25, 26, 27, 71, 73, 79, 83, 89, 97, 101, 103, 107, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42]

cp's OEIS Frontend

A346150 Alternating runs of primes and composites, with the runs of primes being of composite length and the runs of composites being of prime length.

Table of values

List of values

n	a(n)
1	2
2	4
3	6
4	3
5	5
6	7
7	11
8	8
9	9
10	10
11	13
12	17
13	19
14	23
15	29
16	31
17	12
18	14
19	15
20	16
21	18
22	37
23	41
24	43
25	47
26	53
27	59
28	61
29	67
30	20
31	21
32	22
33	24
34	25
35	26
36	27
37	71
38	73
39	79
40	83
41	89
42	97
43	101
44	103
45	107
46	28
47	30
48	32
49	33
50	34
51	35
52	36
53	38
54	39
55	40
56	42

n	a(n)
1	2
2	4
3	6
4	3
5	5
6	7
7	11
8	8
9	9
10	10
11	13
12	17
13	19
14	23
15	29
16	31
17	12
18	14
19	15
20	16
21	18
22	37
23	41
24	43
25	47
26	53
27	59
28	61
29	67
30	20
31	21
32	22
33	24
34	25
35	26
36	27
37	71
38	73
39	79
40	83
41	89
42	97
43	101
44	103
45	107
46	28
47	30
48	32
49	33
50	34
51	35
52	36
53	38
54	39
55	40
56	42

n	a(n)
1	2
2	4
3	6
4	3
5	5
6	7
7	11
8	8
9	9
10	10
11	13
12	17
13	19
14	23
15	29
16	31
17	12
18	14
19	15
20	16
21	18
22	37
23	41
24	43
25	47
26	53
27	59
28	61
29	67
30	20
31	21
32	22
33	24
34	25
35	26
36	27
37	71
38	73
39	79
40	83
41	89
42	97
43	101
44	103
45	107
46	28
47	30
48	32
49	33
50	34
51	35
52	36
53	38
54	39
55	40
56	42