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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.

A236387 Numbers n such that sigma(n) is an oblong number.

Table of values

n a(n)
1 5
2 6
3 11
4 19
5 20
6 26
7 28
8 29
9 30
10 39
11 40
12 41
13 46
14 51
15 55
16 58
17 71
18 86
19 89
20 99
21 104
22 109
23 114
24 116
25 117
26 125
27 131
28 135
29 158
30 177
31 181
32 201
33 202
34 203
35 209
36 216
37 226
38 236
39 239
40 245
41 271
42 278
43 306
44 336
45 340
46 352
47 377
48 379
49 398
50 410
51 411
52 419
53 428
54 442
55 447
56 461

List of values

[5, 6, 11, 19, 20, 26, 28, 29, 30, 39, 40, 41, 46, 51, 55, 58, 71, 86, 89, 99, 104, 109, 114, 116, 117, 125, 131, 135, 158, 177, 181, 201, 202, 203, 209, 216, 226, 236, 239, 245, 271, 278, 306, 336, 340, 352, 377, 379, 398, 410, 411, 419, 428, 442, 447, 461]