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.

A129574 Number of odd divisors of n plus the number of odd divisors of n - 1.

Table of values

n a(n)
1 1
2 2
3 3
4 3
5 3
6 4
7 4
8 3
9 4
10 5
11 4
12 4
13 4
14 4
15 6
16 5
17 3
18 5
19 5
20 4
21 6
22 6
23 4
24 4
25 5
26 5
27 6
28 6
29 4
30 6
31 6
32 3
33 5
34 6
35 6
36 7
37 5
38 4
39 6
40 6
41 4
42 6
43 6
44 4
45 8
46 8
47 4
48 4
49 5
50 6
51 7
52 6
53 4
54 6
55 8
56 6
57 6
58 6
59 4
60 6
61 6
62 4
63 8
64 7
65 5
66 8
67 6
68 4
69 6
70 8
71 6
72 5
73 5
74 4
75 8
76 8
77 6
78 8
79 6
80 4
81 7
82 7
83 4
84 6
85 8
86 6
87 6
88 6
89 4
90 8

List of values

[1, 2, 3, 3, 3, 4, 4, 3, 4, 5, 4, 4, 4, 4, 6, 5, 3, 5, 5, 4, 6, 6, 4, 4, 5, 5, 6, 6, 4, 6, 6, 3, 5, 6, 6, 7, 5, 4, 6, 6, 4, 6, 6, 4, 8, 8, 4, 4, 5, 6, 7, 6, 4, 6, 8, 6, 6, 6, 4, 6, 6, 4, 8, 7, 5, 8, 6, 4, 6, 8, 6, 5, 5, 4, 8, 8, 6, 8, 6, 4, 7, 7, 4, 6, 8, 6, 6, 6, 4, 8]