A346063 - cp's OEIS frontend

A346063 a(n) = primepi(A039634(prime(n)^2-1)).

n	a(n)
1	2
2	1
3	2
4	2
5	4
6	3
7	1
8	5
9	1
10	6
11	4
12	3
13	6
14	4
15	7
16	14
17	6
18	10
19	7
20	37
21	23
22	25
23	28
24	18
25	21
26	22
27	67
28	24
29	9
30	46
31	11
32	19
33	62
34	12
35	40
36	24
37	2
38	27
39	6
40	91
41	11
42	31
43	20
44	1
45	36
46	203
47	69
48	25
49	2
50	80
51	16
52	48
53	155
54	18
55	1
56	326
57	7
58	20
59	109
60	365
61	8
62	39
63	9
64	240
65	438
66	2
67	16
68	154
69	10
70	17

[2, 1, 2, 2, 4, 3, 1, 5, 1, 6, 4, 3, 6, 4, 7, 14, 6, 10, 7, 37, 23, 25, 28, 18, 21, 22, 67, 24, 9, 46, 11, 19, 62, 12, 40, 24, 2, 27, 6, 91, 11, 31, 20, 1, 36, 203, 69, 25, 2, 80, 16, 48, 155, 18, 1, 326, 7, 20, 109, 365, 8, 39, 9, 240, 438, 2, 16, 154, 10, 17]

cp's OEIS Frontend

A346063 a(n) = primepi(A039634(prime(n)^2-1)).

Table of values

List of values

n	a(n)
1	2
2	1
3	2
4	2
5	4
6	3
7	1
8	5
9	1
10	6
11	4
12	3
13	6
14	4
15	7
16	14
17	6
18	10
19	7
20	37
21	23
22	25
23	28
24	18
25	21
26	22
27	67
28	24
29	9
30	46
31	11
32	19
33	62
34	12
35	40
36	24
37	2
38	27
39	6
40	91
41	11
42	31
43	20
44	1
45	36
46	203
47	69
48	25
49	2
50	80
51	16
52	48
53	155
54	18
55	1
56	326
57	7
58	20
59	109
60	365
61	8
62	39
63	9
64	240
65	438
66	2
67	16
68	154
69	10
70	17

n	a(n)
1	2
2	1
3	2
4	2
5	4
6	3
7	1
8	5
9	1
10	6
11	4
12	3
13	6
14	4
15	7
16	14
17	6
18	10
19	7
20	37
21	23
22	25
23	28
24	18
25	21
26	22
27	67
28	24
29	9
30	46
31	11
32	19
33	62
34	12
35	40
36	24
37	2
38	27
39	6
40	91
41	11
42	31
43	20
44	1
45	36
46	203
47	69
48	25
49	2
50	80
51	16
52	48
53	155
54	18
55	1
56	326
57	7
58	20
59	109
60	365
61	8
62	39
63	9
64	240
65	438
66	2
67	16
68	154
69	10
70	17

n	a(n)
1	2
2	1
3	2
4	2
5	4
6	3
7	1
8	5
9	1
10	6
11	4
12	3
13	6
14	4
15	7
16	14
17	6
18	10
19	7
20	37
21	23
22	25
23	28
24	18
25	21
26	22
27	67
28	24
29	9
30	46
31	11
32	19
33	62
34	12
35	40
36	24
37	2
38	27
39	6
40	91
41	11
42	31
43	20
44	1
45	36
46	203
47	69
48	25
49	2
50	80
51	16
52	48
53	155
54	18
55	1
56	326
57	7
58	20
59	109
60	365
61	8
62	39
63	9
64	240
65	438
66	2
67	16
68	154
69	10
70	17