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.

A348688 a(n) = sigma(n) + sigma(n+1) + sigma(n+2) - sigma(n+3), where sigma is the sum of divisors.

Table of values

n a(n)
1 1
2 8
3 5
4 17
5 11
6 22
7 18
8 34
9 15
10 44
11 30
12 42
13 31
14 61
15 34
16 68
17 35
18 69
19 58
20 86
21 32
22 89
23 73
24 93
25 57
26 108
27 54
28 126
29 71
30 119
31 89
32 117
33 59
34 155
35 117
36 133
37 64
38 164
39 92
40 184
41 98
42 146
43 134
44 186
45 74
46 187
47 136
48 202
49 124
50 209
51 104
52 200
53 126
54 232
55 182
56 230
57 62
58 256
59 194
60 222
61 135
62 243
63 171
64 287
65 170

List of values

[1, 8, 5, 17, 11, 22, 18, 34, 15, 44, 30, 42, 31, 61, 34, 68, 35, 69, 58, 86, 32, 89, 73, 93, 57, 108, 54, 126, 71, 119, 89, 117, 59, 155, 117, 133, 64, 164, 92, 184, 98, 146, 134, 186, 74, 187, 136, 202, 124, 209, 104, 200, 126, 232, 182, 230, 62, 256, 194, 222, 135, 243, 171, 287, 170]