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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.

A319534 Number of integers x such that 1 <= x <= n and gcd(x,n) = gcd(x+2,n) = gcd(x+6,n) = 1.

Table of values

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

List of values

[1, 1, 1, 2, 2, 1, 4, 4, 3, 2, 8, 2, 10, 4, 2, 8, 14, 3, 16, 4, 4, 8, 20, 4, 10, 10, 9, 8, 26, 2, 28, 16, 8, 14, 8, 6, 34, 16, 10, 8, 38, 4, 40, 16, 6, 20, 44, 8, 28, 10, 14, 20, 50, 9, 16, 16, 16, 26, 56, 4, 58, 28, 12, 32, 20, 8, 64, 28, 20, 8, 68, 12, 70, 34, 10, 32, 32, 10, 76, 16]

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