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.

A073812 Number of common divisors of sigma(n) and phi(n).

Table of values

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

List of values

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