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.

A058663 a(n) = gcd(n-1, n-phi(n)).

Table of values

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

List of values

[0, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 7, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 23, 1, 1, 1, 1, 1, 5, 1, 1, 1, 1, 1, 3, 1, 1, 21, 1, 1, 3, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 3, 1, 1, 1]