A192064 - cp's OEIS frontend

A192064 Number of primes in the range [2^n-n, 2^n].

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

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

cp's OEIS Frontend

A192064 Number of primes in the range [2^n-n, 2^n].

Table of values

List of values

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

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

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