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.

A340146 Möbius transform of A247074(x) = phi(x)/(Product_{primes p dividing x} gcd(p-1, x-1)).

Table of values

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

List of values

[1, 0, 0, 1, 0, 1, 0, 2, 2, 3, 0, 1, 0, 5, 1, 4, 0, 2, 0, 3, 2, 9, 0, 2, 4, 11, 6, -3, 0, 2, 0, 8, 4, 15, 5, 4, 0, 17, 5, 6, 0, 3, 0, 9, -1, 21, 0, 4, 6, 12, 7, -5, 0, 6, 9, 18, 8, 27, 0, 3, 0, 29, 4, 16, 2, -11, 0, 15, 10, -6, 0, 8, 0, 35, 4, -7, 14, 6, 0, 12, 18, 39, 0, 13, 3, 41, 13, 18, 0, 13, 1, 21, 14, 45, 17, 8]