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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.

A075518 a(n) = floor(prime(n)/4).

Table of values

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

List of values

[0, 0, 1, 1, 2, 3, 4, 4, 5, 7, 7, 9, 10, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 22, 24, 25, 25, 26, 27, 28, 31, 32, 34, 34, 37, 37, 39, 40, 41, 43, 44, 45, 47, 48, 49, 49, 52, 55, 56, 57, 58, 59, 60, 62, 64, 65, 67, 67, 69, 70, 70, 73, 76, 77, 78, 79, 82, 84, 86, 87, 88, 89, 91]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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