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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.

A174260 Prime numbers p such that the concatenation p//1331 is a prime number.

Table of values

n a(n)
1 23
2 29
3 53
4 101
5 113
6 239
7 281
8 311
9 347
10 353
11 389
12 401
13 431
14 617
15 641
16 647
17 743
18 797
19 821
20 827
21 863
22 911
23 941
24 1049
25 1283
26 1319
27 1373
28 1439
29 1481
30 1487
31 1493
32 1511
33 1583
34 1613
35 1667
36 1709
37 1721
38 1733
39 1823
40 1949

List of values

[23, 29, 53, 101, 113, 239, 281, 311, 347, 353, 389, 401, 431, 617, 641, 647, 743, 797, 821, 827, 863, 911, 941, 1049, 1283, 1319, 1373, 1439, 1481, 1487, 1493, 1511, 1583, 1613, 1667, 1709, 1721, 1733, 1823, 1949]

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

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