A235508 - cp's OEIS frontend

A235508 Number of ways to write 2n = p + q with q > 0 such that p, p(p+1) - prime(p) and prime(q) - q + 1 are all prime.

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

[0, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 3, 3, 3, 2, 3, 3, 4, 1, 2, 5, 4, 4, 2, 3, 3, 6, 1, 3, 5, 4, 3, 4, 3, 2, 4, 4, 3, 5, 3, 4, 4, 3, 3, 4, 4, 5, 4, 1, 2, 6, 1, 3, 4, 3, 5, 6, 1, 2, 4, 2, 4, 2, 1, 3, 7, 3, 3, 6, 4, 5, 6, 2, 3, 7, 3, 5, 4, 6, 4, 8, 3, 5, 2, 6, 4, 6]

cp's OEIS Frontend

A235508 Number of ways to write 2n = p + q with q > 0 such that p, p(p+1) - prime(p) and prime(q) - q + 1 are all prime.

Table of values

List of values

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

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

cp's OEIS Frontend

A235508 Number of ways to write 2*n = p + q with q > 0 such that p, p*(p+1) - prime(p) and prime(q) - q + 1 are all prime.

Table of values

List of values

A235508 Number of ways to write 2n = p + q with q > 0 such that p, p(p+1) - prime(p) and prime(q) - q + 1 are all prime.

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