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.

A239868 Sum of sigma(i) mod i for i from 1 to n.

Table of values

n a(n)
1 0
2 1
3 2
4 5
5 6
6 6
7 7
8 14
9 18
10 26
11 27
12 31
13 32
14 42
15 51
16 66
17 67
18 70
19 71
20 73
21 84
22 98
23 99
24 111
25 117
26 133
27 146
28 146
29 147
30 159
31 160
32 191
33 206
34 226
35 239
36 258
37 259
38 281
39 298
40 308
41 309
42 321
43 322
44 362
45 395
46 421
47 422
48 450
49 458
50 501
51 522
52 568
53 569
54 581
55 598
56 606
57 629
58 661

List of values

[0, 1, 2, 5, 6, 6, 7, 14, 18, 26, 27, 31, 32, 42, 51, 66, 67, 70, 71, 73, 84, 98, 99, 111, 117, 133, 146, 146, 147, 159, 160, 191, 206, 226, 239, 258, 259, 281, 298, 308, 309, 321, 322, 362, 395, 421, 422, 450, 458, 501, 522, 568, 569, 581, 598, 606, 629, 661]