A233529 - cp's OEIS frontend

A233529 a(n) = |{0 < k <= n/2: prime(k)*prime(n-k) - 6 is prime}|.

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	1
7	1
8	1
9	2
10	1
11	3
12	4
13	1
14	4
15	5
16	1
17	5
18	3
19	2
20	1
21	2
22	5
23	5
24	4
25	5
26	6
27	5
28	5
29	4
30	8
31	5
32	7
33	4
34	3
35	6
36	6
37	4
38	8
39	6
40	7
41	7
42	8
43	7
44	5
45	5
46	5
47	7
48	8
49	6
50	13
51	9
52	5
53	3
54	9
55	6
56	8
57	11
58	5
59	9
60	9
61	10
62	8
63	9
64	14
65	9
66	10
67	13
68	11
69	6
70	9
71	12
72	10
73	12
74	14
75	10
76	12
77	7
78	13
79	9
80	7
81	7
82	15
83	12
84	6
85	10
86	11
87	12
88	12
89	9
90	18
91	15
92	14
93	11
94	10
95	10
96	8
97	13
98	21
99	9
100	14

[0, 0, 0, 1, 0, 1, 1, 1, 2, 1, 3, 4, 1, 4, 5, 1, 5, 3, 2, 1, 2, 5, 5, 4, 5, 6, 5, 5, 4, 8, 5, 7, 4, 3, 6, 6, 4, 8, 6, 7, 7, 8, 7, 5, 5, 5, 7, 8, 6, 13, 9, 5, 3, 9, 6, 8, 11, 5, 9, 9, 10, 8, 9, 14, 9, 10, 13, 11, 6, 9, 12, 10, 12, 14, 10, 12, 7, 13, 9, 7, 7, 15, 12, 6, 10, 11, 12, 12, 9, 18, 15, 14, 11, 10, 10, 8, 13, 21, 9, 14]

cp's OEIS Frontend

A233529 a(n) = |{0 < k <= n/2: prime(k)*prime(n-k) - 6 is prime}|.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	1
7	1
8	1
9	2
10	1
11	3
12	4
13	1
14	4
15	5
16	1
17	5
18	3
19	2
20	1
21	2
22	5
23	5
24	4
25	5
26	6
27	5
28	5
29	4
30	8
31	5
32	7
33	4
34	3
35	6
36	6
37	4
38	8
39	6
40	7
41	7
42	8
43	7
44	5
45	5
46	5
47	7
48	8
49	6
50	13
51	9
52	5
53	3
54	9
55	6
56	8
57	11
58	5
59	9
60	9
61	10
62	8
63	9
64	14
65	9
66	10
67	13
68	11
69	6
70	9
71	12
72	10
73	12
74	14
75	10
76	12
77	7
78	13
79	9
80	7
81	7
82	15
83	12
84	6
85	10
86	11
87	12
88	12
89	9
90	18
91	15
92	14
93	11
94	10
95	10
96	8
97	13
98	21
99	9
100	14

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	1
7	1
8	1
9	2
10	1
11	3
12	4
13	1
14	4
15	5
16	1
17	5
18	3
19	2
20	1
21	2
22	5
23	5
24	4
25	5
26	6
27	5
28	5
29	4
30	8
31	5
32	7
33	4
34	3
35	6
36	6
37	4
38	8
39	6
40	7
41	7
42	8
43	7
44	5
45	5
46	5
47	7
48	8
49	6
50	13
51	9
52	5
53	3
54	9
55	6
56	8
57	11
58	5
59	9
60	9
61	10
62	8
63	9
64	14
65	9
66	10
67	13
68	11
69	6
70	9
71	12
72	10
73	12
74	14
75	10
76	12
77	7
78	13
79	9
80	7
81	7
82	15
83	12
84	6
85	10
86	11
87	12
88	12
89	9
90	18
91	15
92	14
93	11
94	10
95	10
96	8
97	13
98	21
99	9
100	14

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	1
7	1
8	1
9	2
10	1
11	3
12	4
13	1
14	4
15	5
16	1
17	5
18	3
19	2
20	1
21	2
22	5
23	5
24	4
25	5
26	6
27	5
28	5
29	4
30	8
31	5
32	7
33	4
34	3
35	6
36	6
37	4
38	8
39	6
40	7
41	7
42	8
43	7
44	5
45	5
46	5
47	7
48	8
49	6
50	13
51	9
52	5
53	3
54	9
55	6
56	8
57	11
58	5
59	9
60	9
61	10
62	8
63	9
64	14
65	9
66	10
67	13
68	11
69	6
70	9
71	12
72	10
73	12
74	14
75	10
76	12
77	7
78	13
79	9
80	7
81	7
82	15
83	12
84	6
85	10
86	11
87	12
88	12
89	9
90	18
91	15
92	14
93	11
94	10
95	10
96	8
97	13
98	21
99	9
100	14