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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.

A066460 a(n) is the least positive integer k such that k is a repdigit number in exactly n different bases B, where 1

Table of values

n a(n)
0 1
1 3
2 7
3 15
4 24
5 40
6 60
7 144
8 120
9 180
10 336
11 420
12 360
13 900
14 960
15 720
16 840
17 1260
18 1440
19 2340
20 1680
21 2880
22 3600
23 8190
24 2520
25 9072
26 9900
27 6300
28 6720
29 20592
30 5040
31 10920
32 7560
33 31320
34 98040
35 25920
36 10080
37 21420
38 177156
39 74256
40 15120
41 28560
42 20160

List of values

[1, 3, 7, 15, 24, 40, 60, 144, 120, 180, 336, 420, 360, 900, 960, 720, 840, 1260, 1440, 2340, 1680, 2880, 3600, 8190, 2520, 9072, 9900, 6300, 6720, 20592, 5040, 10920, 7560, 31320, 98040, 25920, 10080, 21420, 177156, 74256, 15120, 28560, 20160]

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

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