A331539 - cp's OEIS frontend

A331539 a(n) gives the number of primes of form (2n+1)2^m + 1 where m satisfies 2^m <= 2*n+1.

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

[1, 1, 1, 1, 3, 2, 1, 2, 1, 0, 2, 1, 2, 2, 2, 0, 1, 2, 2, 4, 1, 1, 1, 0, 1, 2, 2, 1, 2, 1, 1, 3, 3, 2, 2, 2, 2, 4, 1, 1, 3, 2, 2, 2, 1, 0, 3, 3, 2, 4, 1, 0, 3, 1, 1, 2, 2, 1, 3, 2, 0, 1, 2, 1, 2, 2, 2, 4, 1, 1, 4, 0, 1, 0, 2, 1, 2, 2, 0, 2, 2, 3, 5, 1, 1, 0, 1]

cp's OEIS Frontend

A331539 a(n) gives the number of primes of form (2n+1)2^m + 1 where m satisfies 2^m <= 2*n+1.

Table of values

List of values

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

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

cp's OEIS Frontend

A331539 a(n) gives the number of primes of form (2*n+1)*2^m + 1 where m satisfies 2^m <= 2*n+1.

Table of values

List of values

A331539 a(n) gives the number of primes of form (2n+1)2^m + 1 where m satisfies 2^m <= 2*n+1.

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