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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.

A058189 Number of increasing geometric progressions ending in n (in the positive integers), including those of length 1 or 2.

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 5
6 6
7 7
8 10
9 11
10 10
11 11
12 13
13 13
14 14
15 15
16 21
17 17
18 20
19 19
20 21
21 21
22 22
23 23
24 26
25 29
26 26
27 31
28 29
29 29
30 30
31 31
32 38
33 33
34 34
35 35
36 41
37 37
38 38
39 39
40 42
41 41
42 42
43 43
44 45
45 47
46 46
47 47
48 53
49 55
50 54
51 51
52 53
53 53
54 58
55 55
56 58
57 57
58 58
59 59
60 61
61 61
62 62
63 65
64 77
65 65
66 66
67 67
68 69
69 69
70 70
71 71

List of values

[1, 2, 3, 5, 5, 6, 7, 10, 11, 10, 11, 13, 13, 14, 15, 21, 17, 20, 19, 21, 21, 22, 23, 26, 29, 26, 31, 29, 29, 30, 31, 38, 33, 34, 35, 41, 37, 38, 39, 42, 41, 42, 43, 45, 47, 46, 47, 53, 55, 54, 51, 53, 53, 58, 55, 58, 57, 58, 59, 61, 61, 62, 65, 77, 65, 66, 67, 69, 69, 70, 71]

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

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