A238576 - cp's OEIS frontend

A238576 Number of odd primes p < 2n with prime(n(p-1)/2)^2 - 2 prime.

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

[0, 1, 2, 3, 2, 3, 1, 4, 3, 2, 2, 4, 2, 2, 2, 3, 2, 2, 4, 5, 2, 2, 1, 8, 2, 2, 3, 3, 2, 2, 4, 4, 5, 6, 2, 5, 4, 3, 3, 7, 2, 2, 8, 8, 5, 4, 6, 3, 3, 7, 6, 5, 3, 3, 9, 4, 8, 3, 5, 3, 1, 5, 6, 4, 6, 7, 7, 8, 6, 6, 2, 7, 1, 5, 9, 7, 5, 6, 5, 7]

cp's OEIS Frontend

A238576 Number of odd primes p < 2n with prime(n(p-1)/2)^2 - 2 prime.

Table of values

List of values

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

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

cp's OEIS Frontend

A238576 Number of odd primes p < 2*n with prime(n*(p-1)/2)^2 - 2 prime.

Table of values

List of values

A238576 Number of odd primes p < 2n with prime(n(p-1)/2)^2 - 2 prime.

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