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.

A103288 Numbers k such that sigma(k) >= 2k-1 (union of perfect, abundant and least deficient numbers).

Table of values

n a(n)
1 1
2 2
3 4
4 6
5 8
6 12
7 16
8 18
9 20
10 24
11 28
12 30
13 32
14 36
15 40
16 42
17 48
18 54
19 56
20 60
21 64
22 66
23 70
24 72
25 78
26 80
27 84
28 88
29 90
30 96
31 100
32 102
33 104
34 108
35 112
36 114
37 120
38 126
39 128
40 132
41 138
42 140
43 144
44 150
45 156
46 160
47 162
48 168
49 174
50 176
51 180
52 186
53 192
54 196
55 198
56 200
57 204
58 208
59 210
60 216
61 220

List of values

[1, 2, 4, 6, 8, 12, 16, 18, 20, 24, 28, 30, 32, 36, 40, 42, 48, 54, 56, 60, 64, 66, 70, 72, 78, 80, 84, 88, 90, 96, 100, 102, 104, 108, 112, 114, 120, 126, 128, 132, 138, 140, 144, 150, 156, 160, 162, 168, 174, 176, 180, 186, 192, 196, 198, 200, 204, 208, 210, 216, 220]

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

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