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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.

A344404 a(n) = Sum_{d|n} floor(n/d^2).

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 5
6 7
7 7
8 10
9 10
10 12
11 11
12 16
13 13
14 17
15 16
16 21
17 17
18 24
19 19
20 26
21 23
22 27
23 23
24 33
25 26
26 32
27 30
28 36
29 29
30 41
31 31
32 42
33 36
34 42
35 36
36 52
37 37
38 47
39 43
40 53
41 41
42 57
43 43
44 57
45 51
46 57
47 47
48 69
49 50
50 64
51 56
52 68
53 53
54 74
55 57
56 74
57 63
58 72
59 59
60 87
61 61
62 77
63 71
64 85
65 67
66 90
67 67
68 89
69 76
70 90
71 71

List of values

[1, 2, 3, 5, 5, 7, 7, 10, 10, 12, 11, 16, 13, 17, 16, 21, 17, 24, 19, 26, 23, 27, 23, 33, 26, 32, 30, 36, 29, 41, 31, 42, 36, 42, 36, 52, 37, 47, 43, 53, 41, 57, 43, 57, 51, 57, 47, 69, 50, 64, 56, 68, 53, 74, 57, 74, 63, 72, 59, 87, 61, 77, 71, 85, 67, 90, 67, 89, 76, 90, 71]

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

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