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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.

A356574 a(n) = Sum_{d|n} tau(d^4), where tau(n) = number of divisors of n, cf. A000005.

Table of values

n a(n)
1 1
2 6
3 6
4 15
5 6
6 36
7 6
8 28
9 15
10 36
11 6
12 90
13 6
14 36
15 36
16 45
17 6
18 90
19 6
20 90
21 36
22 36
23 6
24 168
25 15
26 36
27 28
28 90
29 6
30 216
31 6
32 66
33 36
34 36
35 36
36 225
37 6
38 36
39 36
40 168
41 6
42 216
43 6
44 90
45 90
46 36
47 6
48 270
49 15
50 90
51 36
52 90
53 6
54 168
55 36
56 168
57 36
58 36
59 6
60 540
61 6
62 36
63 90
64 91
65 36
66 216
67 6
68 90
69 36
70 216
71 6
72 420
73 6
74 36
75 90
76 90

List of values

[1, 6, 6, 15, 6, 36, 6, 28, 15, 36, 6, 90, 6, 36, 36, 45, 6, 90, 6, 90, 36, 36, 6, 168, 15, 36, 28, 90, 6, 216, 6, 66, 36, 36, 36, 225, 6, 36, 36, 168, 6, 216, 6, 90, 90, 36, 6, 270, 15, 90, 36, 90, 6, 168, 36, 168, 36, 36, 6, 540, 6, 36, 90, 91, 36, 216, 6, 90, 36, 216, 6, 420, 6, 36, 90, 90]

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