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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.

A327123 Expansion of Sum_{k>=1} phi(k) * x^k / (1 + x^(2*k)), where phi = A000010.

Table of values

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

List of values

[1, 1, 1, 2, 5, 1, 5, 4, 5, 5, 9, 2, 13, 5, 5, 8, 17, 5, 17, 10, 5, 9, 21, 4, 25, 13, 13, 10, 29, 5, 29, 16, 9, 17, 25, 10, 37, 17, 13, 20, 41, 5, 41, 18, 25, 21, 45, 8, 37, 25, 17, 26, 53, 13, 45, 20, 17, 29, 57, 10, 61, 29, 25, 32, 65, 9, 65, 34, 21]

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