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.

A340287 Numbers k for which there are A000005(k+1)-1 bases b such that k in base b contains digit b-1.

Table of values

n a(n)
1 1
2 3
3 5
4 9
5 11
6 17
7 27
8 35
9 37
10 39
11 41
12 65
13 81
14 83
15 85
16 89
17 131
18 149
19 179
20 203
21 255
22 257
23 263
24 407
25 419
26 455
27 539
28 739
29 811
30 899
31 1031
32 1109
33 1385
34 1619
35 1631
36 1883
37 2819
38 3299
39 3527
40 4133
41 4139
42 4151
43 4919
44 5669
45 5939
46 6299
47 7055
48 7307
49 8303
50 9829
51 9839
52 10661

List of values

[1, 3, 5, 9, 11, 17, 27, 35, 37, 39, 41, 65, 81, 83, 85, 89, 131, 149, 179, 203, 255, 257, 263, 407, 419, 455, 539, 739, 811, 899, 1031, 1109, 1385, 1619, 1631, 1883, 2819, 3299, 3527, 4133, 4139, 4151, 4919, 5669, 5939, 6299, 7055, 7307, 8303, 9829, 9839, 10661]