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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.

A176815 Radius of the second-shortest interval (of positive length) centered at prime(n) that has prime endpoints, (zero if no solution exists).

Table of values

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

List of values

[0, 0, 0, 0, 8, 10, 12, 0, 18, 18, 28, 24, 18, 30, 24, 30, 30, 42, 30, 18, 30, 48, 30, 42, 54, 30, 24, 24, 42, 54, 30, 42, 36, 42, 42, 42, 54, 60, 60, 24, 48, 30, 60, 36, 60, 72, 18, 84, 36, 78, 36, 42, 42, 18, 24, 30, 42, 60, 36, 30, 84, 54, 30, 48, 84, 66, 48, 60, 54, 72, 36]

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

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