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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.

A030472 Primes which when concatenated with next 3 primes are also prime.

Table of values

n a(n)
1 2
2 67
3 83
4 139
5 149
6 383
7 503
8 557
9 577
10 587
11 601
12 613
13 727
14 937
15 1181
16 1259
17 1451
18 1453
19 1489
20 1531
21 1621
22 1657
23 1831
24 1879
25 1907
26 2269
27 2441
28 2531
29 2897
30 3191
31 3709
32 3779
33 4057
34 4153
35 4373
36 4603
37 4871
38 5197
39 5233
40 5261
41 5279
42 5417
43 5711

List of values

[2, 67, 83, 139, 149, 383, 503, 557, 577, 587, 601, 613, 727, 937, 1181, 1259, 1451, 1453, 1489, 1531, 1621, 1657, 1831, 1879, 1907, 2269, 2441, 2531, 2897, 3191, 3709, 3779, 4057, 4153, 4373, 4603, 4871, 5197, 5233, 5261, 5279, 5417, 5711]

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

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