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.

A309307 Number of unitary divisors of n (excluding 1).

Table of values

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

List of values

[0, 1, 1, 1, 1, 3, 1, 1, 1, 3, 1, 3, 1, 3, 3, 1, 1, 3, 1, 3, 3, 3, 1, 3, 1, 3, 1, 3, 1, 7, 1, 1, 3, 3, 3, 3, 1, 3, 3, 3, 1, 7, 1, 3, 3, 3, 1, 3, 1, 3, 3, 3, 1, 3, 3, 3, 3, 3, 1, 7, 1, 3, 3, 1, 3, 7, 1, 3, 3, 7, 1, 3, 1, 3, 3, 3, 3, 7, 1, 3, 1, 3, 1, 7, 3, 3, 3, 3, 1, 7, 3, 3, 3, 3, 3, 3, 1, 3, 3, 3]