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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.

A334051 The difference between the number of prime numbers in the ranges (1, p_n] and (p_n, 2*p_n], where p_n is the n-th prime.

Table of values

n a(n)
1 0
2 1
3 2
4 2
5 2
6 3
7 3
8 4
9 4
10 4
11 4
12 3
13 4
14 5
15 6
16 5
17 4
18 6
19 6
20 6
21 8
22 7
23 8
24 8
25 6
26 6
27 8
28 9
29 11
30 12
31 8
32 9
33 8
34 9
35 8
36 10
37 9
38 10
39 11
40 12
41 11
42 12
43 11
44 12
45 13
46 14
47 12
48 10
49 11
50 12
51 12
52 13
53 14
54 13
55 13
56 13
57 15
58 16
59 17
60 18
61 19
62 18
63 14
64 14
65 16
66 17
67 13
68 14
69 13
70 15
71 16
72 17
73 16
74 16

List of values

[0, 1, 2, 2, 2, 3, 3, 4, 4, 4, 4, 3, 4, 5, 6, 5, 4, 6, 6, 6, 8, 7, 8, 8, 6, 6, 8, 9, 11, 12, 8, 9, 8, 9, 8, 10, 9, 10, 11, 12, 11, 12, 11, 12, 13, 14, 12, 10, 11, 12, 12, 13, 14, 13, 13, 13, 15, 16, 17, 18, 19, 18, 14, 14, 16, 17, 13, 14, 13, 15, 16, 17, 16, 16]

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

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