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.

A204828 Numbers n with abundancy 3 <= sigma(n)/n < 4.

Table of values

n a(n)
1 120
2 180
3 240
4 360
5 420
6 480
7 504
8 540
9 600
10 660
11 672
12 720
13 780
14 840
15 900
16 960
17 1008
18 1080
19 1200
20 1260
21 1320
22 1344
23 1440
24 1512
25 1560
26 1584
27 1620
28 1680
29 1800
30 1848
31 1872
32 1890
33 1920
34 1980
35 2016
36 2040
37 2100
38 2160
39 2184
40 2280
41 2340
42 2352
43 2376
44 2400
45 2520
46 2640

List of values

[120, 180, 240, 360, 420, 480, 504, 540, 600, 660, 672, 720, 780, 840, 900, 960, 1008, 1080, 1200, 1260, 1320, 1344, 1440, 1512, 1560, 1584, 1620, 1680, 1800, 1848, 1872, 1890, 1920, 1980, 2016, 2040, 2100, 2160, 2184, 2280, 2340, 2352, 2376, 2400, 2520, 2640]