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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.

A174034 The smallest prime p such that the double-concatenation prime(n) // prime(n+1) // p is a prime number.

Table of values

n a(n)
1 3
2 3
3 7
4 19
5 17
6 7
7 17
8 7
9 3
10 23
11 11
12 11
13 11
14 17
15 3
16 3
17 7
18 3
19 11
20 17
21 29
22 19
23 13
24 7
25 37
26 7
27 23
28 37
29 7
30 23
31 7
32 7
33 7
34 11
35 7
36 53
37 29
38 31
39 31
40 13
41 11
42 17
43 7
44 11
45 11
46 29
47 23
48 47
49 7
50 7
51 7
52 13
53 11
54 19
55 67
56 19
57 13
58 101
59 59
60 13
61 13
62 31
63 17
64 23
65 7
66 13
67 29
68 73
69 29
70 7

List of values

[3, 3, 7, 19, 17, 7, 17, 7, 3, 23, 11, 11, 11, 17, 3, 3, 7, 3, 11, 17, 29, 19, 13, 7, 37, 7, 23, 37, 7, 23, 7, 7, 7, 11, 7, 53, 29, 31, 31, 13, 11, 17, 7, 11, 11, 29, 23, 47, 7, 7, 7, 13, 11, 19, 67, 19, 13, 101, 59, 13, 13, 31, 17, 23, 7, 13, 29, 73, 29, 7]

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

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