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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.

A244249 Table A(n,k) in which n-th row lists in increasing order all bases b to which p = prime(n) is a Wieferich prime (i.e., b^(p-1) is congruent to 1 mod p^2), read by antidiagonals.

Table of values

n a(n)
1 5
2 9
3 8
4 13
5 10
6 7
7 17
8 17
9 18
10 18
11 21
12 19
13 24
14 19
15 3
16 25
17 26
18 26
19 30
20 9
21 19
22 29
23 28
24 32
25 31
26 27
27 22
28 38
29 33
30 35
31 43
32 48
33 40
34 23
35 40
36 28
37 37
38 37
39 49
40 50
41 81
42 70
43 65
44 54
45 28
46 41
47 44
48 51
49 67
50 94
51 80
52 75
53 62
54 42
55 14
56 45
57 46
58 57
59 68
60 112
61 89
62 110
63 68
64 63
65 41
66 115

List of values

[5, 9, 8, 13, 10, 7, 17, 17, 18, 18, 21, 19, 24, 19, 3, 25, 26, 26, 30, 9, 19, 29, 28, 32, 31, 27, 22, 38, 33, 35, 43, 48, 40, 23, 40, 28, 37, 37, 49, 50, 81, 70, 65, 54, 28, 41, 44, 51, 67, 94, 80, 75, 62, 42, 14, 45, 46, 57, 68, 112, 89, 110, 68, 63, 41, 115]

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

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