A237885 - cp's OEIS frontend

A237885 a(n) is the number of ways that 4n can be written as p+q (p>q) with p, q, (p-q)/2, 4n-(p-q)/2 all prime numbers.

n	a(n)
1	0
2	0
3	0
4	1
5	1
6	1
7	0
8	1
9	1
10	1
11	0
12	2
13	0
14	0
15	2
16	0
17	0
18	1
19	0
20	0
21	2
22	0
23	0
24	0
25	1
26	0
27	1
28	1
29	0
30	4
31	0
32	0
33	2
34	0
35	1
36	1
37	0
38	1
39	2
40	0
41	0
42	2
43	0
44	0
45	3
46	0
47	0
48	2
49	0
50	1
51	1
52	0
53	0
54	2
55	0
56	0
57	1
58	0
59	0
60	5
61	0
62	0
63	3
64	0
65	0
66	1
67	0
68	0
69	0
70	0
71	0
72	4
73	0
74	0
75	3
76	0
77	0
78	2
79	0
80	1
81	3
82	0
83	0
84	3
85	1
86	0
87	3

[0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 2, 0, 0, 2, 0, 0, 1, 0, 0, 2, 0, 0, 0, 1, 0, 1, 1, 0, 4, 0, 0, 2, 0, 1, 1, 0, 1, 2, 0, 0, 2, 0, 0, 3, 0, 0, 2, 0, 1, 1, 0, 0, 2, 0, 0, 1, 0, 0, 5, 0, 0, 3, 0, 0, 1, 0, 0, 0, 0, 0, 4, 0, 0, 3, 0, 0, 2, 0, 1, 3, 0, 0, 3, 1, 0, 3]

cp's OEIS Frontend

A237885 a(n) is the number of ways that 4n can be written as p+q (p>q) with p, q, (p-q)/2, 4n-(p-q)/2 all prime numbers.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	1
5	1
6	1
7	0
8	1
9	1
10	1
11	0
12	2
13	0
14	0
15	2
16	0
17	0
18	1
19	0
20	0
21	2
22	0
23	0
24	0
25	1
26	0
27	1
28	1
29	0
30	4
31	0
32	0
33	2
34	0
35	1
36	1
37	0
38	1
39	2
40	0
41	0
42	2
43	0
44	0
45	3
46	0
47	0
48	2
49	0
50	1
51	1
52	0
53	0
54	2
55	0
56	0
57	1
58	0
59	0
60	5
61	0
62	0
63	3
64	0
65	0
66	1
67	0
68	0
69	0
70	0
71	0
72	4
73	0
74	0
75	3
76	0
77	0
78	2
79	0
80	1
81	3
82	0
83	0
84	3
85	1
86	0
87	3

n	a(n)
1	0
2	0
3	0
4	1
5	1
6	1
7	0
8	1
9	1
10	1
11	0
12	2
13	0
14	0
15	2
16	0
17	0
18	1
19	0
20	0
21	2
22	0
23	0
24	0
25	1
26	0
27	1
28	1
29	0
30	4
31	0
32	0
33	2
34	0
35	1
36	1
37	0
38	1
39	2
40	0
41	0
42	2
43	0
44	0
45	3
46	0
47	0
48	2
49	0
50	1
51	1
52	0
53	0
54	2
55	0
56	0
57	1
58	0
59	0
60	5
61	0
62	0
63	3
64	0
65	0
66	1
67	0
68	0
69	0
70	0
71	0
72	4
73	0
74	0
75	3
76	0
77	0
78	2
79	0
80	1
81	3
82	0
83	0
84	3
85	1
86	0
87	3

n	a(n)
1	0
2	0
3	0
4	1
5	1
6	1
7	0
8	1
9	1
10	1
11	0
12	2
13	0
14	0
15	2
16	0
17	0
18	1
19	0
20	0
21	2
22	0
23	0
24	0
25	1
26	0
27	1
28	1
29	0
30	4
31	0
32	0
33	2
34	0
35	1
36	1
37	0
38	1
39	2
40	0
41	0
42	2
43	0
44	0
45	3
46	0
47	0
48	2
49	0
50	1
51	1
52	0
53	0
54	2
55	0
56	0
57	1
58	0
59	0
60	5
61	0
62	0
63	3
64	0
65	0
66	1
67	0
68	0
69	0
70	0
71	0
72	4
73	0
74	0
75	3
76	0
77	0
78	2
79	0
80	1
81	3
82	0
83	0
84	3
85	1
86	0
87	3