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.

A368616 a(n) = Sum_{k=1..n} pi(k) * (ceiling(n/k) - floor(n/k)).

Table of values

n a(n)
1 0
2 0
3 1
4 2
5 5
6 5
7 11
8 12
9 17
10 19
11 27
12 24
13 37
14 38
15 44
16 48
17 61
18 58
19 75
20 73
21 85
22 93
23 107
24 99
25 122
26 127
27 137
28 139
29 161
30 152
31 181
32 179
33 196
34 206
35 218
36 212
37 247
38 250
39 263
40 261
41 295
42 284
43 321
44 319
45 334
46 353
47 377
48 360
49 403
50 405
51 428
52 434
53 467
54 457
55 491
56 489
57 521
58 536
59 563
60 536
61 597
62 603
63 615

List of values

[0, 0, 1, 2, 5, 5, 11, 12, 17, 19, 27, 24, 37, 38, 44, 48, 61, 58, 75, 73, 85, 93, 107, 99, 122, 127, 137, 139, 161, 152, 181, 179, 196, 206, 218, 212, 247, 250, 263, 261, 295, 284, 321, 319, 334, 353, 377, 360, 403, 405, 428, 434, 467, 457, 491, 489, 521, 536, 563, 536, 597, 603, 615]