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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.

A229307 Numbers k such that A031971(2*k) <> k (mod 2*k).

Table of values

n a(n)
1 3
2 6
3 9
4 10
5 12
6 15
7 18
8 20
9 21
10 24
11 27
12 30
13 33
14 36
15 39
16 40
17 42
18 45
19 48
20 50
21 51
22 54
23 55
24 57
25 60
26 63
27 66
28 69
29 70
30 72
31 75
32 78
33 80
34 81
35 84
36 87
37 90
38 93
39 96
40 99
41 100
42 102
43 105
44 108
45 110
46 111
47 114
48 117
49 120
50 123
51 126
52 129
53 130
54 132
55 135
56 136
57 138
58 140
59 141
60 144

List of values

[3, 6, 9, 10, 12, 15, 18, 20, 21, 24, 27, 30, 33, 36, 39, 40, 42, 45, 48, 50, 51, 54, 55, 57, 60, 63, 66, 69, 70, 72, 75, 78, 80, 81, 84, 87, 90, 93, 96, 99, 100, 102, 105, 108, 110, 111, 114, 117, 120, 123, 126, 129, 130, 132, 135, 136, 138, 140, 141, 144]

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

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