A238458 - cp's OEIS frontend

A238458 Number of primes p < n with 2*P(n-p) + 1 prime, where P(.) is the partition function (A000041).

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

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

cp's OEIS Frontend

A238458 Number of primes p < n with 2*P(n-p) + 1 prime, where P(.) is the partition function (A000041).

Table of values

List of values

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

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

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