A259301 - cp's OEIS frontend

A259301 Taken over all those prime-partitionable numbers m for which there exists a 2-partition of the set of primes < m that has one subset containing two primes only, a(n) is the frequency with which the smaller prime occurs, where n is the prime index.

n	a(n)
1	0
2	0
3	1
4	1
5	3
6	3
7	3
8	2
9	4
10	4
11	3
12	4
13	5
14	7
15	8
16	5
17	8
18	7
19	8
20	9
21	10
22	10
23	11
24	12
25	12
26	14
27	13
28	13
29	12
30	15
31	14
32	14
33	17
34	14
35	19
36	17
37	12
38	18
39	13
40	19
41	20
42	22
43	20
44	23
45	21
46	15
47	21
48	21
49	23
50	25
51	26
52	23
53	26
54	26
55	19
56	23
57	27
58	24
59	29
60	27
61	26
62	28
63	31
64	29
65	30
66	25
67	30
68	29
69	34
70	30

[0, 0, 1, 1, 3, 3, 3, 2, 4, 4, 3, 4, 5, 7, 8, 5, 8, 7, 8, 9, 10, 10, 11, 12, 12, 14, 13, 13, 12, 15, 14, 14, 17, 14, 19, 17, 12, 18, 13, 19, 20, 22, 20, 23, 21, 15, 21, 21, 23, 25, 26, 23, 26, 26, 19, 23, 27, 24, 29, 27, 26, 28, 31, 29, 30, 25, 30, 29, 34, 30]

cp's OEIS Frontend

A259301 Taken over all those prime-partitionable numbers m for which there exists a 2-partition of the set of primes < m that has one subset containing two primes only, a(n) is the frequency with which the smaller prime occurs, where n is the prime index.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	1
5	3
6	3
7	3
8	2
9	4
10	4
11	3
12	4
13	5
14	7
15	8
16	5
17	8
18	7
19	8
20	9
21	10
22	10
23	11
24	12
25	12
26	14
27	13
28	13
29	12
30	15
31	14
32	14
33	17
34	14
35	19
36	17
37	12
38	18
39	13
40	19
41	20
42	22
43	20
44	23
45	21
46	15
47	21
48	21
49	23
50	25
51	26
52	23
53	26
54	26
55	19
56	23
57	27
58	24
59	29
60	27
61	26
62	28
63	31
64	29
65	30
66	25
67	30
68	29
69	34
70	30

n	a(n)
1	0
2	0
3	1
4	1
5	3
6	3
7	3
8	2
9	4
10	4
11	3
12	4
13	5
14	7
15	8
16	5
17	8
18	7
19	8
20	9
21	10
22	10
23	11
24	12
25	12
26	14
27	13
28	13
29	12
30	15
31	14
32	14
33	17
34	14
35	19
36	17
37	12
38	18
39	13
40	19
41	20
42	22
43	20
44	23
45	21
46	15
47	21
48	21
49	23
50	25
51	26
52	23
53	26
54	26
55	19
56	23
57	27
58	24
59	29
60	27
61	26
62	28
63	31
64	29
65	30
66	25
67	30
68	29
69	34
70	30

n	a(n)
1	0
2	0
3	1
4	1
5	3
6	3
7	3
8	2
9	4
10	4
11	3
12	4
13	5
14	7
15	8
16	5
17	8
18	7
19	8
20	9
21	10
22	10
23	11
24	12
25	12
26	14
27	13
28	13
29	12
30	15
31	14
32	14
33	17
34	14
35	19
36	17
37	12
38	18
39	13
40	19
41	20
42	22
43	20
44	23
45	21
46	15
47	21
48	21
49	23
50	25
51	26
52	23
53	26
54	26
55	19
56	23
57	27
58	24
59	29
60	27
61	26
62	28
63	31
64	29
65	30
66	25
67	30
68	29
69	34
70	30