A076472 - cp's OEIS frontend

A076472 Number of pairs (p,q) of successive primes with p+q<=n and gcd(p+q,n)>1.

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

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

cp's OEIS Frontend

A076472 Number of pairs (p,q) of successive primes with p+q<=n and gcd(p+q,n)>1.

Table of values

List of values

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

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

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