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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.

A179872 Numbers h such that antiharmonic mean B(h) of the numbers k < h such that gcd(k, h) = 1 is not integer.

Table of values

n a(n)
1 3
2 4
3 6
4 7
5 8
6 9
7 12
8 13
9 14
10 15
11 16
12 18
13 19
14 20
15 21
16 24
17 25
18 26
19 27
20 28
21 30
22 31
23 32
24 33
25 35
26 36
27 37
28 38
29 39
30 40
31 42
32 43
33 44
34 45
35 48
36 49
37 50
38 51
39 52
40 54
41 56
42 57
43 60
44 61
45 62
46 63
47 64
48 65
49 66
50 67
51 68
52 69
53 70
54 72
55 73
56 74
57 75
58 76
59 77
60 78
61 79
62 80
63 81
64 84
65 86
66 87
67 88

List of values

[3, 4, 6, 7, 8, 9, 12, 13, 14, 15, 16, 18, 19, 20, 21, 24, 25, 26, 27, 28, 30, 31, 32, 33, 35, 36, 37, 38, 39, 40, 42, 43, 44, 45, 48, 49, 50, 51, 52, 54, 56, 57, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 84, 86, 87, 88]

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

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