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.

A212180 Number of distinct second signatures (cf. A212172) represented among divisors of n.

Table of values

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

List of values

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