A127197 - cp's OEIS frontend

A127197 a(n) = numerator( pi(n)/2^n ).

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

[1, 1, 1, 3, 3, 1, 1, 1, 1, 5, 5, 3, 3, 3, 3, 7, 7, 1, 1, 1, 1, 9, 9, 9, 9, 9, 9, 5, 5, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 13, 13, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 17, 17, 9, 9, 9, 9, 9, 9, 19, 19, 19, 19, 5, 5, 21, 21, 21, 21, 21, 21, 11, 11, 11, 11, 23, 23, 23, 23, 23, 23]

cp's OEIS Frontend

A127197 a(n) = numerator( pi(n)/2^n ).

Table of values

List of values

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

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

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