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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.

A023237 Primes p such that 10*p + 1 is also prime.

Table of values

n a(n)
1 3
2 7
3 13
4 19
5 31
6 43
7 97
8 103
9 109
10 151
11 157
12 181
13 193
14 211
15 241
16 271
17 337
18 349
19 367
20 409
21 421
22 439
23 487
24 523
25 547
26 571
27 601
28 613
29 631
30 691
31 733
32 769
33 811
34 823
35 829
36 883
37 937
38 1009
39 1021
40 1033
41 1039
42 1063
43 1069
44 1117
45 1201
46 1249
47 1279
48 1291
49 1459
50 1483
51 1489

List of values

[3, 7, 13, 19, 31, 43, 97, 103, 109, 151, 157, 181, 193, 211, 241, 271, 337, 349, 367, 409, 421, 439, 487, 523, 547, 571, 601, 613, 631, 691, 733, 769, 811, 823, 829, 883, 937, 1009, 1021, 1033, 1039, 1063, 1069, 1117, 1201, 1249, 1279, 1291, 1459, 1483, 1489]

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

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