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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.

A211458 The irregular triangle of all bases b for which A181780(n) is a Fermat pseudoprime.

Table of values

n a(n)
1 4
2 11
3 8
4 13
5 7
6 18
7 9
8 25
9 10
10 23
11 6
12 29
13 14
14 25
15 8
16 17
17 19
18 26
19 28
20 37
21 18
22 19
23 30
24 31
25 16
26 35
27 9
28 29
29 21
30 34
31 20
32 37
33 8
34 55
35 8
36 12
37 14
38 18
39 21
40 27
41 31
42 34
43 38
44 44
45 47
46 51
47 53
48 57
49 25
50 31
51 37
52 49
53 22
54 47
55 11
56 51
57 26
58 49
59 45
60 49
61 34
62 43
63 4
64 13
65 16
66 18
67 21
68 33

List of values

[4, 11, 8, 13, 7, 18, 9, 25, 10, 23, 6, 29, 14, 25, 8, 17, 19, 26, 28, 37, 18, 19, 30, 31, 16, 35, 9, 29, 21, 34, 20, 37, 8, 55, 8, 12, 14, 18, 21, 27, 31, 34, 38, 44, 47, 51, 53, 57, 25, 31, 37, 49, 22, 47, 11, 51, 26, 49, 45, 49, 34, 43, 4, 13, 16, 18, 21, 33]

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

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