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.

A132881 a(n) is the number of isolated divisors of n.

Table of values

n a(n)
1 1
2 0
3 2
4 1
5 2
6 1
7 2
8 2
9 3
10 2
11 2
12 2
13 2
14 2
15 4
16 3
17 2
18 3
19 2
20 2
21 4
22 2
23 2
24 4
25 3
26 2
27 4
28 4
29 2
30 3
31 2
32 4
33 4
34 2
35 4
36 5
37 2
38 2
39 4
40 4
41 2
42 3
43 2
44 4
45 6
46 2
47 2
48 6
49 3
50 4
51 4
52 4
53 2
54 5
55 4
56 4
57 4
58 2
59 2
60 6
61 2
62 2
63 6
64 5
65 4
66 5
67 2
68 4
69 4
70 6
71 2
72 6
73 2
74 2
75 6
76 4
77 4
78 5
79 2
80 6
81 5
82 2
83 2
84 6
85 4
86 2
87 4
88 6
89 2
90 5
91 4
92 4
93 4
94 2
95 4
96 8
97 2
98 4
99 6
100 5
101 2
102 5
103 2
104 6
105 8

List of values

[1, 0, 2, 1, 2, 1, 2, 2, 3, 2, 2, 2, 2, 2, 4, 3, 2, 3, 2, 2, 4, 2, 2, 4, 3, 2, 4, 4, 2, 3, 2, 4, 4, 2, 4, 5, 2, 2, 4, 4, 2, 3, 2, 4, 6, 2, 2, 6, 3, 4, 4, 4, 2, 5, 4, 4, 4, 2, 2, 6, 2, 2, 6, 5, 4, 5, 2, 4, 4, 6, 2, 6, 2, 2, 6, 4, 4, 5, 2, 6, 5, 2, 2, 6, 4, 2, 4, 6, 2, 5, 4, 4, 4, 2, 4, 8, 2, 4, 6, 5, 2, 5, 2, 6, 8]