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.

A193386 Number of even divisors of phi(n).

Table of values

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

List of values

[0, 0, 1, 1, 2, 1, 2, 2, 2, 2, 2, 2, 4, 2, 3, 3, 4, 2, 3, 3, 4, 2, 2, 3, 4, 4, 3, 4, 4, 3, 4, 4, 4, 4, 6, 4, 6, 3, 6, 4, 6, 4, 4, 4, 6, 2, 2, 4, 4, 4, 5, 6, 4, 3, 6, 6, 6, 4, 2, 4, 8, 4, 6, 5, 8, 4, 4, 5, 4, 6, 4, 6, 9, 6, 6, 6, 8, 6, 4, 5, 4, 6, 2, 6, 6, 4, 6, 6, 6, 6, 9, 4, 8, 2, 9, 5, 10, 4, 8, 6, 6, 5, 4, 8, 8]