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.

A359100 a(n) = (1/4) * Sum_{d|n} phi(5 * d).

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 6
6 6
7 7
8 8
9 9
10 12
11 11
12 12
13 13
14 14
15 18
16 16
17 17
18 18
19 19
20 24
21 21
22 22
23 23
24 24
25 31
26 26
27 27
28 28
29 29
30 36
31 31
32 32
33 33
34 34
35 42
36 36
37 37
38 38
39 39
40 48
41 41
42 42
43 43
44 44
45 54
46 46
47 47
48 48
49 49
50 62
51 51
52 52
53 53
54 54
55 66
56 56
57 57
58 58
59 59
60 72
61 61
62 62
63 63
64 64
65 78
66 66
67 67
68 68
69 69
70 84
71 71
72 72
73 73
74 74
75 93
76 76

List of values

[1, 2, 3, 4, 6, 6, 7, 8, 9, 12, 11, 12, 13, 14, 18, 16, 17, 18, 19, 24, 21, 22, 23, 24, 31, 26, 27, 28, 29, 36, 31, 32, 33, 34, 42, 36, 37, 38, 39, 48, 41, 42, 43, 44, 54, 46, 47, 48, 49, 62, 51, 52, 53, 54, 66, 56, 57, 58, 59, 72, 61, 62, 63, 64, 78, 66, 67, 68, 69, 84, 71, 72, 73, 74, 93, 76]