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.

A039649 a(n) = phi(n)+1.

Table of values

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

List of values

[2, 2, 3, 3, 5, 3, 7, 5, 7, 5, 11, 5, 13, 7, 9, 9, 17, 7, 19, 9, 13, 11, 23, 9, 21, 13, 19, 13, 29, 9, 31, 17, 21, 17, 25, 13, 37, 19, 25, 17, 41, 13, 43, 21, 25, 23, 47, 17, 43, 21, 33, 25, 53, 19, 41, 25, 37, 29, 59, 17, 61, 31, 37, 33, 49, 21, 67, 33, 45, 25, 71, 25, 73, 37, 41]

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

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