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.

A036553 a(n) = phi(prime(n)) - prime(phi(n)).

Table of values

n a(n)
1 -1
2 0
3 1
4 3
5 3
6 9
7 3
8 11
9 9
10 21
11 1
12 29
13 3
14 29
15 27
16 33
17 5
18 47
19 5
20 51
21 35
22 49
23 3
24 69
25 25
26 63
27 41
28 69
29 1
30 93
31 13
32 77
33 65
34 85
35 59
36 113
37 5
38 101
39 77
40 119
41 5
42 143
43 9
44 121
45 107
46 119
47 11
48 169
49 45
50 157
51 101
52 149
53 1
54 189
55 83
56 173
57 117
58 163
59 5
60 227
61 1
62 179
63 155

List of values

[-1, 0, 1, 3, 3, 9, 3, 11, 9, 21, 1, 29, 3, 29, 27, 33, 5, 47, 5, 51, 35, 49, 3, 69, 25, 63, 41, 69, 1, 93, 13, 77, 65, 85, 59, 113, 5, 101, 77, 119, 5, 143, 9, 121, 107, 119, 11, 169, 45, 157, 101, 149, 1, 189, 83, 173, 117, 163, 5, 227, 1, 179, 155]