A116619 - cp's OEIS frontend

A116619 a(n) = number of ways of representing 2*prime(n) as the unordered sum of two primes.

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	3
7	4
8	2
9	4
10	4
11	3
12	5
13	5
14	5
15	5
16	6
17	6
18	4
19	6
20	8
21	6
22	5
23	6
24	7
25	7
26	9
27	7
28	8
29	7
30	7
31	9
32	9
33	11
34	7
35	11
36	9
37	9
38	7
39	11
40	9
41	10
42	8
43	10
44	12
45	11
46	7
47	11
48	12
49	12
50	9
51	13
52	11
53	11
54	15
55	14
56	15
57	14
58	10
59	11
60	14
61	13
62	13
63	15
64	17
65	12
66	14
67	14
68	15
69	19
70	14
71	19
72	15
73	15
74	18
75	15
76	17
77	15
78	17
79	16
80	17
81	17
82	18
83	17

[1, 1, 2, 2, 3, 3, 4, 2, 4, 4, 3, 5, 5, 5, 5, 6, 6, 4, 6, 8, 6, 5, 6, 7, 7, 9, 7, 8, 7, 7, 9, 9, 11, 7, 11, 9, 9, 7, 11, 9, 10, 8, 10, 12, 11, 7, 11, 12, 12, 9, 13, 11, 11, 15, 14, 15, 14, 10, 11, 14, 13, 13, 15, 17, 12, 14, 14, 15, 19, 14, 19, 15, 15, 18, 15, 17, 15, 17, 16, 17, 17, 18, 17]

cp's OEIS Frontend

A116619 a(n) = number of ways of representing 2*prime(n) as the unordered sum of two primes.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	3
7	4
8	2
9	4
10	4
11	3
12	5
13	5
14	5
15	5
16	6
17	6
18	4
19	6
20	8
21	6
22	5
23	6
24	7
25	7
26	9
27	7
28	8
29	7
30	7
31	9
32	9
33	11
34	7
35	11
36	9
37	9
38	7
39	11
40	9
41	10
42	8
43	10
44	12
45	11
46	7
47	11
48	12
49	12
50	9
51	13
52	11
53	11
54	15
55	14
56	15
57	14
58	10
59	11
60	14
61	13
62	13
63	15
64	17
65	12
66	14
67	14
68	15
69	19
70	14
71	19
72	15
73	15
74	18
75	15
76	17
77	15
78	17
79	16
80	17
81	17
82	18
83	17

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	3
7	4
8	2
9	4
10	4
11	3
12	5
13	5
14	5
15	5
16	6
17	6
18	4
19	6
20	8
21	6
22	5
23	6
24	7
25	7
26	9
27	7
28	8
29	7
30	7
31	9
32	9
33	11
34	7
35	11
36	9
37	9
38	7
39	11
40	9
41	10
42	8
43	10
44	12
45	11
46	7
47	11
48	12
49	12
50	9
51	13
52	11
53	11
54	15
55	14
56	15
57	14
58	10
59	11
60	14
61	13
62	13
63	15
64	17
65	12
66	14
67	14
68	15
69	19
70	14
71	19
72	15
73	15
74	18
75	15
76	17
77	15
78	17
79	16
80	17
81	17
82	18
83	17

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	3
7	4
8	2
9	4
10	4
11	3
12	5
13	5
14	5
15	5
16	6
17	6
18	4
19	6
20	8
21	6
22	5
23	6
24	7
25	7
26	9
27	7
28	8
29	7
30	7
31	9
32	9
33	11
34	7
35	11
36	9
37	9
38	7
39	11
40	9
41	10
42	8
43	10
44	12
45	11
46	7
47	11
48	12
49	12
50	9
51	13
52	11
53	11
54	15
55	14
56	15
57	14
58	10
59	11
60	14
61	13
62	13
63	15
64	17
65	12
66	14
67	14
68	15
69	19
70	14
71	19
72	15
73	15
74	18
75	15
76	17
77	15
78	17
79	16
80	17
81	17
82	18
83	17