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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.

A065328 a(n) is the number of primes less than or equal to prime(n) - n.

Table of values

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

List of values

[0, 0, 1, 2, 3, 4, 4, 5, 6, 8, 8, 9, 9, 10, 11, 12, 13, 14, 15, 15, 15, 16, 17, 18, 20, 21, 21, 22, 22, 23, 24, 25, 27, 27, 30, 30, 30, 30, 31, 32, 33, 34, 34, 35, 36, 36, 38, 40, 40, 41, 42, 42, 42, 45, 46, 46, 47, 47, 47, 47, 47, 50, 53, 53, 53, 54, 56, 57, 59, 59, 60, 61, 62]

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

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