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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.

A214288 Primes of the form phi(n)+1 sorted by increasing n, where phi is the Euler totient function.

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 17
16 7
17 19
18 13
19 11
20 23
21 13
22 19
23 13
24 29
25 31
26 17
27 17
28 13
29 37
30 19
31 17
32 41
33 13
34 43
35 23
36 47
37 17
38 43
39 53
40 19
41 41
42 37
43 29
44 59
45 17
46 61
47 31
48 37
49 67
50 71
51 73
52 37
53 41
54 37
55 61
56 79
57 41
58 83
59 43
60 41
61 89
62 73
63 61
64 47
65 73
66 97
67 43
68 61
69 41
70 101
71 103
72 53
73 107
74 37

List of values

[2, 2, 3, 3, 5, 3, 7, 5, 7, 5, 11, 5, 13, 7, 17, 7, 19, 13, 11, 23, 13, 19, 13, 29, 31, 17, 17, 13, 37, 19, 17, 41, 13, 43, 23, 47, 17, 43, 53, 19, 41, 37, 29, 59, 17, 61, 31, 37, 67, 71, 73, 37, 41, 37, 61, 79, 41, 83, 43, 41, 89, 73, 61, 47, 73, 97, 43, 61, 41, 101, 103, 53, 107, 37]

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

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