A076471 - cp's OEIS frontend

A076471 Number of pairs (p,q) of successive primes with p+q<=n.

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

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

cp's OEIS Frontend

A076471 Number of pairs (p,q) of successive primes with p+q<=n.

Table of values

List of values

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

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

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