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.

A057859 Number of residue classes modulo n which contain a prime.

Table of values

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

List of values

[1, 2, 3, 3, 5, 4, 7, 5, 7, 6, 11, 6, 13, 8, 10, 9, 17, 8, 19, 10, 14, 12, 23, 10, 21, 14, 19, 14, 29, 11, 31, 17, 22, 18, 26, 14, 37, 20, 26, 18, 41, 15, 43, 22, 26, 24, 47, 18, 43, 22, 34, 26, 53, 20, 42, 26, 38, 30, 59, 19, 61, 32, 38, 33, 50, 23, 67, 34, 46]

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

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