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.

A007620 Numbers m such that every k <= m is a sum of proper divisors of m (for m>1).

Table of values

n a(n)
1 1
2 6
3 12
4 18
5 20
6 24
7 28
8 30
9 36
10 40
11 42
12 48
13 54
14 56
15 60
16 66
17 72
18 78
19 80
20 84
21 88
22 90
23 96
24 100
25 104
26 108
27 112
28 120
29 126
30 132
31 140
32 144
33 150
34 156
35 160
36 162
37 168
38 176
39 180
40 192
41 196
42 198
43 200
44 204
45 208
46 210
47 216
48 220
49 224
50 228
51 234
52 240
53 252
54 260
55 264
56 270
57 272
58 276
59 280
60 288
61 294
62 300
63 304
64 306

List of values

[1, 6, 12, 18, 20, 24, 28, 30, 36, 40, 42, 48, 54, 56, 60, 66, 72, 78, 80, 84, 88, 90, 96, 100, 104, 108, 112, 120, 126, 132, 140, 144, 150, 156, 160, 162, 168, 176, 180, 192, 196, 198, 200, 204, 208, 210, 216, 220, 224, 228, 234, 240, 252, 260, 264, 270, 272, 276, 280, 288, 294, 300, 304, 306]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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