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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.

A071941 Nonprimes for which floor(2^n/n) is even.

Table of values

n a(n)
1 1
2 4
3 6
4 8
5 9
6 10
7 14
8 15
9 16
10 20
11 21
12 22
13 24
14 26
15 27
16 28
17 30
18 32
19 33
20 34
21 35
22 38
23 39
24 40
25 44
26 46
27 49
28 50
29 51
30 52
31 54
32 56
33 57
34 58
35 60
36 62
37 63
38 64
39 65
40 66
41 68
42 69
43 70
44 72
45 74
46 75
47 76
48 77
49 78
50 81
51 82
52 84
53 85
54 86
55 87
56 88
57 90
58 92
59 93
60 94
61 96
62 102
63 104
64 105
65 106
66 111
67 114
68 115

List of values

[1, 4, 6, 8, 9, 10, 14, 15, 16, 20, 21, 22, 24, 26, 27, 28, 30, 32, 33, 34, 35, 38, 39, 40, 44, 46, 49, 50, 51, 52, 54, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 81, 82, 84, 85, 86, 87, 88, 90, 92, 93, 94, 96, 102, 104, 105, 106, 111, 114, 115]

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