A237284 - cp's OEIS frontend

A237284 Number of ordered ways to write 2*n = p + q with p, q and A000720(p) all prime.

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

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

cp's OEIS Frontend

A237284 Number of ordered ways to write 2*n = p + q with p, q and A000720(p) all prime.

Table of values

List of values

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

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

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