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.

A281113 Number of twice-factorizations of n. Number of ways to choose a postpositive factorization of each part of a postpositive factorization of n.

Table of values

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

List of values

[1, 1, 3, 1, 3, 1, 6, 3, 3, 1, 9, 1, 3, 3, 15, 1, 9, 1, 9, 3, 3, 1, 23, 3, 3, 6, 9, 1, 12, 1, 28, 3, 3, 3, 32, 1, 3, 3, 23, 1, 12, 1, 9, 9, 3, 1, 58, 3, 9, 3, 9, 1, 23, 3, 23, 3, 3, 1, 41, 1, 3, 9, 66, 3, 12, 1, 9, 3, 12, 1, 84, 1, 3, 9, 9, 3, 12, 1, 58, 15, 3]