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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.

A246911 Numbers n such that sigma(n+sigma(n)) = 4*sigma(n).

Table of values

n a(n)
1 28
2 66
3 348
4 496
5 840
6 920
7 1320
8 1416
9 1602
10 1770
11 1896
12 1920
13 2040
14 2280
15 2556
16 3000
17 3360
18 3720
19 4440
20 4920
21 5456
22 5640
23 5826
24 7080
25 7392
26 8010
27 8040
28 8128
29 8298
30 10528
31 10680
32 11424
33 12768
34 12840
35 13080
36 15108
37 15504
38 17880
39 18120
40 18720
41 18840
42 20832

List of values

[28, 66, 348, 496, 840, 920, 1320, 1416, 1602, 1770, 1896, 1920, 2040, 2280, 2556, 3000, 3360, 3720, 4440, 4920, 5456, 5640, 5826, 7080, 7392, 8010, 8040, 8128, 8298, 10528, 10680, 11424, 12768, 12840, 13080, 15108, 15504, 17880, 18120, 18720, 18840, 20832]