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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.

A344403 a(n) = Sum_{d|n} d * floor(n/d^2).

Table of values

n a(n)
1 1
2 2
3 3
4 6
5 5
6 8
7 7
8 12
9 12
10 14
11 11
12 21
13 13
14 20
15 18
16 28
17 17
18 32
19 19
20 34
21 27
22 32
23 23
24 46
25 30
26 38
27 36
28 46
29 29
30 58
31 31
32 56
33 42
34 50
35 40
36 80
37 37
38 56
39 51
40 73
41 41
42 80
43 43
44 74
45 65
46 68
47 47
48 105
49 56
50 84
51 66
52 90
53 53
54 104
55 65
56 103
57 75
58 86
59 59
60 136
61 61
62 92
63 91
64 120
65 75
66 125
67 67
68 118
69 90

List of values

[1, 2, 3, 6, 5, 8, 7, 12, 12, 14, 11, 21, 13, 20, 18, 28, 17, 32, 19, 34, 27, 32, 23, 46, 30, 38, 36, 46, 29, 58, 31, 56, 42, 50, 40, 80, 37, 56, 51, 73, 41, 80, 43, 74, 65, 68, 47, 105, 56, 84, 66, 90, 53, 104, 65, 103, 75, 86, 59, 136, 61, 92, 91, 120, 75, 125, 67, 118, 90]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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