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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.

A250216 Weak irregular primes. A prime is weak irregular iff it is a Bernoulli irregular prime or an Euler irregular prime.

Table of values

n a(n)
1 19
2 31
3 37
4 43
5 47
6 59
7 61
8 67
9 71
10 79
11 101
12 103
13 131
14 137
15 139
16 149
17 157
18 193
19 223
20 233
21 241
22 251
23 257
24 263
25 271
26 277
27 283
28 293
29 307
30 311
31 347
32 349
33 353
34 359
35 373
36 379
37 389
38 401
39 409
40 419
41 421
42 433
43 461
44 463
45 467
46 491
47 509
48 523
49 541
50 547
51 557
52 563
53 571
54 577
55 587
56 593

List of values

[19, 31, 37, 43, 47, 59, 61, 67, 71, 79, 101, 103, 131, 137, 139, 149, 157, 193, 223, 233, 241, 251, 257, 263, 271, 277, 283, 293, 307, 311, 347, 349, 353, 359, 373, 379, 389, 401, 409, 419, 421, 433, 461, 463, 467, 491, 509, 523, 541, 547, 557, 563, 571, 577, 587, 593]

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

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