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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.

A341615 Numbers k for which sigma(k) < 2k < A003961(k).

Table of values

n a(n)
1 4
2 8
3 9
4 10
5 14
6 15
7 16
8 21
9 27
10 32
11 35
12 39
13 44
14 45
15 49
16 50
17 52
18 57
19 63
20 64
21 68
22 69
23 75
24 76
25 81
26 91
27 92
28 98
29 99
30 105
31 110
32 116
33 117
34 124
35 125
36 128
37 130
38 135
39 136
40 147
41 148
42 152
43 153
44 154
45 164
46 165
47 170
48 171
49 172
50 175
51 182
52 184
53 188
54 189
55 190
56 195
57 207
58 212
59 225
60 230
61 231
62 232
63 236
64 238
65 242
66 243
67 244
68 245
69 248
70 250
71 255
72 256

List of values

[4, 8, 9, 10, 14, 15, 16, 21, 27, 32, 35, 39, 44, 45, 49, 50, 52, 57, 63, 64, 68, 69, 75, 76, 81, 91, 92, 98, 99, 105, 110, 116, 117, 124, 125, 128, 130, 135, 136, 147, 148, 152, 153, 154, 164, 165, 170, 171, 172, 175, 182, 184, 188, 189, 190, 195, 207, 212, 225, 230, 231, 232, 236, 238, 242, 243, 244, 245, 248, 250, 255, 256]