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.

A304066 a(n) = Sum_{k=1..n} k*floor(n/prime(k)).

Table of values

n a(n)
1 0
2 1
3 3
4 4
5 7
6 10
7 14
8 15
9 17
10 21
11 26
12 29
13 35
14 40
15 45
16 46
17 53
18 56
19 64
20 68
21 74
22 80
23 89
24 92
25 95
26 102
27 104
28 109
29 119
30 125
31 136
32 137
33 144
34 152
35 159
36 162
37 174
38 183
39 191
40 195
41 208
42 215
43 229
44 235
45 240
46 250
47 265
48 268
49 272
50 276
51 285
52 292
53 308
54 311
55 319
56 324
57 334
58 345
59 362
60 368
61 386
62 398
63 404
64 405
65 414

List of values

[0, 1, 3, 4, 7, 10, 14, 15, 17, 21, 26, 29, 35, 40, 45, 46, 53, 56, 64, 68, 74, 80, 89, 92, 95, 102, 104, 109, 119, 125, 136, 137, 144, 152, 159, 162, 174, 183, 191, 195, 208, 215, 229, 235, 240, 250, 265, 268, 272, 276, 285, 292, 308, 311, 319, 324, 334, 345, 362, 368, 386, 398, 404, 405, 414]