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.

A077080 a(n) = phi(sigma(n) + phi(n)) = A000010(A000203(n) + A000010(n)) = A000010(A065387(n)).

Table of values

n a(n)
1 1
2 2
3 2
4 6
5 4
6 6
7 6
8 18
9 18
10 10
11 10
12 16
13 12
14 8
15 16
16 24
17 16
18 24
19 18
20 20
21 20
22 22
23 22
24 32
25 32
26 18
27 28
28 32
29 28
30 32
31 30
32 78
33 32
34 24
35 24
36 102
37 36
38 24
39 32
40 52
41 40
42 36
43 42
44 48
45 32
46 46
47 46
48 48
49 60
50 112
51 48
52 60
53 52
54 44
55 48
56 48
57 56
58 58
59 58
60 88
61 60
62 36
63 48
64 104
65 40
66 80
67 66
68 78
69 48
70 48
71 70

List of values

[1, 2, 2, 6, 4, 6, 6, 18, 18, 10, 10, 16, 12, 8, 16, 24, 16, 24, 18, 20, 20, 22, 22, 32, 32, 18, 28, 32, 28, 32, 30, 78, 32, 24, 24, 102, 36, 24, 32, 52, 40, 36, 42, 48, 32, 46, 46, 48, 60, 112, 48, 60, 52, 44, 48, 48, 56, 58, 58, 88, 60, 36, 48, 104, 40, 80, 66, 78, 48, 48, 70]

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