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.

A144757 Number of factor trees for n.

Table of values

n a(n)
2 1
3 1
4 1
5 1
6 2
7 1
8 2
9 1
10 2
11 1
12 6
13 1
14 2
15 2
16 5
17 1
18 6
19 1
20 6
21 2
22 2
23 1
24 20
25 1
26 2
27 2
28 6
29 1
30 12
31 1
32 14
33 2
34 2
35 2
36 30
37 1
38 2
39 2
40 20
41 1
42 12
43 1
44 6
45 6
46 2
47 1
48 70
49 1
50 6
51 2
52 6
53 1
54 20
55 2
56 20
57 2
58 2
59 1
60 60
61 1
62 2
63 6
64 42
65 2
66 12
67 1
68 6
69 2
70 12
71 1
72 140
73 1
74 2
75 6
76 6
77 2
78 12
79 1
80 70
81 5
82 2
83 1
84 60
85 2
86 2
87 2
88 20
89 1
90 60
91 2
92 6
93 2
94 2
95 2
96 252

List of values

[1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 6, 1, 2, 2, 5, 1, 6, 1, 6, 2, 2, 1, 20, 1, 2, 2, 6, 1, 12, 1, 14, 2, 2, 2, 30, 1, 2, 2, 20, 1, 12, 1, 6, 6, 2, 1, 70, 1, 6, 2, 6, 1, 20, 2, 20, 2, 2, 1, 60, 1, 2, 6, 42, 2, 12, 1, 6, 2, 12, 1, 140, 1, 2, 6, 6, 2, 12, 1, 70, 5, 2, 1, 60, 2, 2, 2, 20, 1, 60, 2, 6, 2, 2, 2, 252]