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.

A132189 Number of non-constant 3-term geometric progressions with no term exceeding n.

Table of values

n a(n)
1 0
2 0
3 0
4 2
5 2
6 2
7 2
8 4
9 8
10 8
11 8
12 10
13 10
14 10
15 10
16 16
17 16
18 20
19 20
20 22
21 22
22 22
23 22
24 24
25 32
26 32
27 36
28 38
29 38
30 38
31 38
32 44
33 44
34 44
35 44
36 54
37 54
38 54
39 54
40 56
41 56
42 56
43 56
44 58
45 62
46 62
47 62
48 68
49 80
50 88
51 88
52 90
53 90
54 94
55 94
56 96
57 96
58 96
59 96
60 98
61 98
62 98
63 102
64 116
65 116
66 116
67 116
68 118
69 118
70 118

List of values

[0, 0, 0, 2, 2, 2, 2, 4, 8, 8, 8, 10, 10, 10, 10, 16, 16, 20, 20, 22, 22, 22, 22, 24, 32, 32, 36, 38, 38, 38, 38, 44, 44, 44, 44, 54, 54, 54, 54, 56, 56, 56, 56, 58, 62, 62, 62, 68, 80, 88, 88, 90, 90, 94, 94, 96, 96, 96, 96, 98, 98, 98, 102, 116, 116, 116, 116, 118, 118, 118]

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

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