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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.

A205684 Numbers k for which 5 divides prime(k)-prime(j) for some j each k occurs once for each such j.

Table of values

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

List of values

[4, 6, 7, 7, 9, 9, 10, 11, 12, 12, 12, 13, 13, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 18, 18, 18, 19, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 21, 22, 22, 22, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 27]

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

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