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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.

A331486 Numbers k which are emirps in more bases 1 < b < k than any previous number.

Table of values

n a(n)
1 2
2 5
3 7
4 11
5 13
6 17
7 23
8 29
9 31
10 41
11 43
12 53
13 67
14 73
15 79
16 97
17 113
18 127
19 157
20 193
21 223
22 269
23 277
24 311
25 379
26 421
27 431
28 467
29 487
30 563
31 613
32 647
33 743
34 907
35 937
36 977
37 1093
38 1193
39 1249
40 1259
41 1373
42 1483
43 1543
44 1637
45 1667
46 1933
47 2239
48 2393
49 2477
50 2521
51 2857
52 2957
53 3083

List of values

[2, 5, 7, 11, 13, 17, 23, 29, 31, 41, 43, 53, 67, 73, 79, 97, 113, 127, 157, 193, 223, 269, 277, 311, 379, 421, 431, 467, 487, 563, 613, 647, 743, 907, 937, 977, 1093, 1193, 1249, 1259, 1373, 1483, 1543, 1637, 1667, 1933, 2239, 2393, 2477, 2521, 2857, 2957, 3083]

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

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