cp's OEIS Frontend

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.

A075244 Least number requiring the base n to produce a prime by base reversal.

Table of values

n a(n)
1 2
2 3
3 15
4 8
5 109
6 9
7 119
8 16
9 27
10 70
11 2197
12 36
13 1265
14 158
15 213
16 178
17 4205
18 126
19 14189
20 260
21 273
22 304
23 4865
24 120
25 1295
26 78
27 81
28 532
29 44323
30 150
31 47317
32 952
33 771
34 102
35 16705
36 492
37 6209
38 114
39 1209
40 2020
41 132743
42 294
43 22945
44 2834
45 2721
46 2276
47 66455
48 144

List of values

[2, 3, 15, 8, 109, 9, 119, 16, 27, 70, 2197, 36, 1265, 158, 213, 178, 4205, 126, 14189, 260, 273, 304, 4865, 120, 1295, 78, 81, 532, 44323, 150, 47317, 952, 771, 102, 16705, 492, 6209, 114, 1209, 2020, 132743, 294, 22945, 2834, 2721, 2276, 66455, 144]

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

Content is available under The OEIS End-User License Agreement.