cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A340205 Number of primes in A339443 among the values of A339443(k) for k = 1..n.

Table of values

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

List of values

[0, 0, 1, 1, 2, 2, 3, 4, 4, 4, 5, 6, 7, 7, 7, 8, 9, 10, 10, 10, 11, 12, 12, 13, 14, 14, 14, 15, 16, 17, 17, 17, 17, 17, 18, 19, 19, 20, 21, 21, 21, 21, 21, 22, 23, 24, 24, 24, 25, 26, 26, 26, 26, 27, 27, 28, 29, 29, 29, 30, 31, 31, 31, 32, 32, 33, 33, 33, 34, 35, 35, 35, 35, 35]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.