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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.

A177235 The number of non-divisors k of n, 1 < k < n, for which floor(n/k) is odd.

Table of values

n a(n)
1 0
2 0
3 1
4 1
5 2
6 2
7 4
8 3
9 4
10 5
11 7
12 5
13 7
14 7
15 9
16 9
17 10
18 9
19 12
20 10
21 12
22 14
23 16
24 12
25 14
26 15
27 17
28 17
29 19
30 17
31 21
32 18
33 19
34 21
35 23
36 21
37 24
38 24
39 26
40 24
41 26
42 24
43 28
44 26
45 28
46 32
47 34
48 28
49 30
50 30
51 33
52 33
53 35
54 33
55 37
56 35
57 37
58 39
59 41
60 35
61 39
62 39
63 41
64 41
65 42
66 42
67 46
68 44
69 46
70 46
71 50
72 43
73 46
74 46
75 48

List of values

[0, 0, 1, 1, 2, 2, 4, 3, 4, 5, 7, 5, 7, 7, 9, 9, 10, 9, 12, 10, 12, 14, 16, 12, 14, 15, 17, 17, 19, 17, 21, 18, 19, 21, 23, 21, 24, 24, 26, 24, 26, 24, 28, 26, 28, 32, 34, 28, 30, 30, 33, 33, 35, 33, 37, 35, 37, 39, 41, 35, 39, 39, 41, 41, 42, 42, 46, 44, 46, 46, 50, 43, 46, 46, 48]

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

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