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.

A048106 Number of unitary divisors of n (A034444) - number of non-unitary divisors of n (A048105).

Table of values

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

List of values

[1, 2, 2, 1, 2, 4, 2, 0, 1, 4, 2, 2, 2, 4, 4, -1, 2, 2, 2, 2, 4, 4, 2, 0, 1, 4, 0, 2, 2, 8, 2, -2, 4, 4, 4, -1, 2, 4, 4, 0, 2, 8, 2, 2, 2, 4, 2, -2, 1, 2, 4, 2, 2, 0, 4, 0, 4, 4, 2, 4, 2, 4, 2, -3, 4, 8, 2, 2, 4, 8, 2, -4, 2, 4, 2, 2, 4, 8, 2, -2, -1, 4, 2, 4, 4, 4, 4, 0, 2, 4, 4, 2, 4, 4, 4, -4, 2, 2, 2]