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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.

A020169 Pseudoprimes to base 41.

Table of values

n a(n)
1 4
2 8
3 10
4 15
5 20
6 21
7 35
8 40
9 105
10 145
11 231
12 344
13 561
14 609
15 645
16 671
17 703
18 841
19 1065
20 1105
21 1281
22 1387
23 1417
24 1729
25 1885
26 1891
27 2121
28 2465
29 2701
30 2821
31 3045
32 3053
33 3829
34 4033
35 4205
36 4521
37 4870
38 5365
39 5565
40 6161
41 6892
42 7957
43 8295
44 8321
45 8695
46 8905
47 8911
48 9253

List of values

[4, 8, 10, 15, 20, 21, 35, 40, 105, 145, 231, 344, 561, 609, 645, 671, 703, 841, 1065, 1105, 1281, 1387, 1417, 1729, 1885, 1891, 2121, 2465, 2701, 2821, 3045, 3053, 3829, 4033, 4205, 4521, 4870, 5365, 5565, 6161, 6892, 7957, 8295, 8321, 8695, 8905, 8911, 9253]

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

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