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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.

A000355 Primes p == 3, 9, 11 (mod 20) such that 2p+1 is also prime.

Table of values

n a(n)
1 3
2 11
3 23
4 29
5 83
6 89
7 131
8 191
9 251
10 431
11 443
12 491
13 509
14 683
15 743
16 809
17 911
18 1031
19 1049
20 1103
21 1223
22 1229
23 1289
24 1409
25 1451
26 1511
27 1583
28 1811
29 1889
30 1931
31 2003
32 2063
33 2069
34 2129
35 2351
36 2543
37 2549
38 2903
39 2963
40 2969
41 3023
42 3329
43 3389
44 3449
45 3491
46 3623
47 3803

List of values

[3, 11, 23, 29, 83, 89, 131, 191, 251, 431, 443, 491, 509, 683, 743, 809, 911, 1031, 1049, 1103, 1223, 1229, 1289, 1409, 1451, 1511, 1583, 1811, 1889, 1931, 2003, 2063, 2069, 2129, 2351, 2543, 2549, 2903, 2963, 2969, 3023, 3329, 3389, 3449, 3491, 3623, 3803]

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

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